/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
/* this file is part of xreader, a generic document viewer
 *
 * Copyright (C) 2009, Juanjo Marín <juanj.marin@juntadeandalucia.es>
 * Copyright (C) 2004, Red Hat, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include "config.h"

#include <math.h>
#include <string.h>
#include <gtk/gtk.h>
#include <poppler.h>
#include <poppler-document.h>
#include <poppler-page.h>
#ifdef HAVE_CAIRO_PDF
#include <cairo-pdf.h>
#endif
#ifdef HAVE_CAIRO_PS
#include <cairo-ps.h>
#endif
#include <glib/gi18n-lib.h>

#include "ev-poppler.h"
#include "ev-file-exporter.h"
#include "ev-document-find.h"
#include "ev-document-misc.h"
#include "ev-document-links.h"
#include "ev-document-images.h"
#include "ev-document-fonts.h"
#include "ev-document-security.h"
#include "ev-document-thumbnails.h"
#include "ev-document-transition.h"
#include "ev-document-forms.h"
#include "ev-document-layers.h"
#include "ev-document-print.h"
#include "ev-document-annotations.h"
#include "ev-document-attachments.h"
#include "ev-document-text.h"
#include "ev-selection.h"
#include "ev-transition-effect.h"
#include "ev-attachment.h"
#include "ev-image.h"

#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>

#if (defined (HAVE_CAIRO_PDF) || defined (HAVE_CAIRO_PS))
#define HAVE_CAIRO_PRINT
#endif

/* fields from the XMP Rights Management Schema, XMP Specification Sept 2005, pag. 45 */
#define LICENSE_MARKED "/x:xmpmeta/rdf:RDF/rdf:Description/xmpRights:Marked"
#define LICENSE_TEXT "/x:xmpmeta/rdf:RDF/rdf:Description/dc:rights/rdf:Alt/rdf:li[lang('%s')]"
#define LICENSE_WEB_STATEMENT "/x:xmpmeta/rdf:RDF/rdf:Description/xmpRights:WebStatement"
/* license field from Creative Commons schema, http://creativecommons.org/ns */
#define LICENSE_URI "/x:xmpmeta/rdf:RDF/rdf:Description/cc:license/@rdf:resource"

/* TRACK MESSAGE TO STOP OVERWHELMING THE TERMINAL */
const char *action_message = NULL;

typedef struct {
	EvFileExporterFormat format;

	/* Pages per sheet */
	gint pages_per_sheet;
	gint pages_printed;
	gint pages_x;
	gint pages_y;
	gdouble paper_width;
	gdouble paper_height;

#ifdef HAVE_CAIRO_PRINT
	cairo_t *cr;
#else
	PopplerPSFile *ps_file;
#endif
} PdfPrintContext;

struct _PdfDocumentClass
{
	EvDocumentClass parent_class;
};

struct _PdfDocument
{
	EvDocument parent_instance;

	PopplerDocument *document;
	gchar *password;
	gboolean forms_modified;
	gboolean annots_modified;

	PopplerFontInfo *font_info;
	PopplerFontsIter *fonts_iter;
	int fonts_scanned_pages;

	PdfPrintContext *print_ctx;

	GHashTable *annots;
};

static void pdf_document_security_iface_init             (EvDocumentSecurityInterface    *iface);
static void pdf_document_document_thumbnails_iface_init  (EvDocumentThumbnailsInterface  *iface);
static void pdf_document_document_links_iface_init       (EvDocumentLinksInterface       *iface);
static void pdf_document_document_images_iface_init      (EvDocumentImagesInterface      *iface);
static void pdf_document_document_forms_iface_init       (EvDocumentFormsInterface       *iface);
static void pdf_document_document_fonts_iface_init       (EvDocumentFontsInterface       *iface);
static void pdf_document_document_layers_iface_init      (EvDocumentLayersInterface      *iface);
static void pdf_document_document_print_iface_init       (EvDocumentPrintInterface       *iface);
static void pdf_document_document_annotations_iface_init (EvDocumentAnnotationsInterface *iface);
static void pdf_document_document_attachments_iface_init (EvDocumentAttachmentsInterface *iface);
static void pdf_document_find_iface_init                 (EvDocumentFindInterface        *iface);
static void pdf_document_file_exporter_iface_init        (EvFileExporterInterface        *iface);
static void pdf_selection_iface_init                     (EvSelectionInterface           *iface);
static void pdf_document_page_transition_iface_init      (EvDocumentTransitionInterface  *iface);
static void pdf_document_text_iface_init                 (EvDocumentTextInterface        *iface);
static void pdf_document_thumbnails_get_dimensions       (EvDocumentThumbnails           *document_thumbnails,
							  EvRenderContext                *rc,
							  gint                           *width,
							  gint                           *height);
static int  pdf_document_get_n_pages			 (EvDocument                     *document);

static EvLinkDest *ev_link_dest_from_dest    (PdfDocument       *pdf_document,
					      PopplerDest       *dest);
static EvLink     *ev_link_from_action       (PdfDocument       *pdf_document,
					      PopplerAction     *action);
static void        pdf_print_context_free    (PdfPrintContext   *ctx);
static gboolean    attachment_save_to_buffer (PopplerAttachment *attachment,
					      gchar            **buffer,
					      gsize             *buffer_size,
					      GError           **error);

EV_BACKEND_REGISTER_WITH_CODE (PdfDocument, pdf_document,
			 {
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
								 pdf_document_security_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
								 pdf_document_document_thumbnails_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
								 pdf_document_document_links_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_IMAGES,
								 pdf_document_document_images_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FORMS,
								 pdf_document_document_forms_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FONTS,
								 pdf_document_document_fonts_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LAYERS,
								 pdf_document_document_layers_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_PRINT,
								 pdf_document_document_print_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_ANNOTATIONS,
								 pdf_document_document_annotations_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_ATTACHMENTS,
								 pdf_document_document_attachments_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
								 pdf_document_find_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER,
								 pdf_document_file_exporter_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION,
								 pdf_selection_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_TRANSITION,
								 pdf_document_page_transition_iface_init);
				 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_TEXT,
								 pdf_document_text_iface_init);
			 });

static void
pdf_document_dispose (GObject *object)
{
	PdfDocument *pdf_document = PDF_DOCUMENT(object);

	if (pdf_document->print_ctx) {
		pdf_print_context_free (pdf_document->print_ctx);
		pdf_document->print_ctx = NULL;
	}

	if (pdf_document->annots) {
		g_hash_table_destroy (pdf_document->annots);
		pdf_document->annots = NULL;
	}

	if (pdf_document->document) {
		g_object_unref (pdf_document->document);
	}

	if (pdf_document->font_info) {
		poppler_font_info_free (pdf_document->font_info);
	}

	if (pdf_document->fonts_iter) {
		poppler_fonts_iter_free (pdf_document->fonts_iter);
	}

	G_OBJECT_CLASS (pdf_document_parent_class)->dispose (object);
}

static void
pdf_document_init (PdfDocument *pdf_document)
{
	pdf_document->password = NULL;
}

static void
convert_error (GError  *poppler_error,
	       GError **error)
{
	if (poppler_error == NULL)
		return;

	if (poppler_error->domain == POPPLER_ERROR) {
		/* convert poppler errors into EvDocument errors */
		gint code = EV_DOCUMENT_ERROR_INVALID;
		if (poppler_error->code == POPPLER_ERROR_INVALID)
			code = EV_DOCUMENT_ERROR_INVALID;
		else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
			code = EV_DOCUMENT_ERROR_ENCRYPTED;

		g_set_error_literal (error,
                                     EV_DOCUMENT_ERROR,
                                     code,
                                     poppler_error->message);

		g_error_free (poppler_error);
	} else {
		g_propagate_error (error, poppler_error);
	}
}


/* EvDocument */
static gboolean
pdf_document_save (EvDocument  *document,
		   const char  *uri,
		   GError     **error)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document);
	gboolean retval;
	GError *poppler_error = NULL;

	if (pdf_document->forms_modified || pdf_document->annots_modified) {
		retval = poppler_document_save (pdf_document->document,
						uri, &poppler_error);
		if (retval) {
			pdf_document->forms_modified = FALSE;
			pdf_document->annots_modified = FALSE;
		}
	} else {
		retval = poppler_document_save_a_copy (pdf_document->document,
						       uri, &poppler_error);
	}

	if (! retval)
		convert_error (poppler_error, error);

	return retval;
}

static gboolean
pdf_document_load (EvDocument   *document,
		   const char   *uri,
		   GError      **error)
{
	GError *poppler_error = NULL;
	PdfDocument *pdf_document = PDF_DOCUMENT (document);

	pdf_document->document =
		poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);

	if (pdf_document->document == NULL) {
		convert_error (poppler_error, error);
		return FALSE;
	}

	return TRUE;
}

static int
pdf_document_get_n_pages (EvDocument *document)
{
	return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
}

static EvPage *
pdf_document_get_page (EvDocument *document,
		       gint        index)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document);
	PopplerPage *poppler_page;
	EvPage      *page;

	poppler_page = poppler_document_get_page (pdf_document->document, index);
	page = ev_page_new (index);
	page->backend_page = (EvBackendPage)g_object_ref (poppler_page);
	page->backend_destroy_func = (EvBackendPageDestroyFunc)g_object_unref;
	g_object_unref (poppler_page);

	return page;
}

static void
pdf_document_get_page_size (EvDocument *document,
			    EvPage     *page,
			    double     *width,
			    double     *height)
{
	g_return_if_fail (POPPLER_IS_PAGE (page->backend_page));

	poppler_page_get_size (POPPLER_PAGE (page->backend_page), width, height);
}

static char *
pdf_document_get_page_label (EvDocument *document,
			     EvPage     *page)
{
	char *label = NULL;

	g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);

	g_object_get (G_OBJECT (page->backend_page),
		      "label", &label,
		      NULL);
	return label;
}

static cairo_surface_t *
pdf_page_render (PopplerPage     *page,
		 gint             width,
		 gint             height,
		 EvRenderContext *rc)
{
	cairo_surface_t *surface;
	cairo_t *cr;

	surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
					      width, height);
	cr = cairo_create (surface);

	switch (rc->rotation) {
	        case 90:
			cairo_translate (cr, width, 0);
			break;
	        case 180:
			cairo_translate (cr, width, height);
			break;
	        case 270:
			cairo_translate (cr, 0, height);
			break;
	        default:
			cairo_translate (cr, 0, 0);
	}
	cairo_scale (cr, rc->scale, rc->scale);
	cairo_rotate (cr, rc->rotation * G_PI / 180.0);
	poppler_page_render (page, cr);

	cairo_set_operator (cr, CAIRO_OPERATOR_DEST_OVER);
	cairo_set_source_rgb (cr, 1., 1., 1.);
	cairo_paint (cr);

	cairo_destroy (cr);

	return surface;
}

static cairo_surface_t *
pdf_document_render (EvDocument      *document,
		     EvRenderContext *rc)
{
	PopplerPage *poppler_page;
	double width_points, height_points;
	gint width, height;

	poppler_page = POPPLER_PAGE (rc->page->backend_page);

	poppler_page_get_size (poppler_page,
			       &width_points, &height_points);

	if (rc->rotation == 90 || rc->rotation == 270) {
		width = (int) ((height_points * rc->scale) + 0.5);
		height = (int) ((width_points * rc->scale) + 0.5);
	} else {
		width = (int) ((width_points * rc->scale) + 0.5);
		height = (int) ((height_points * rc->scale) + 0.5);
	}

	return pdf_page_render (poppler_page,
				width, height, rc);
}

/* reference:
http://www.pdfa.org/lib/exe/fetch.php?id=pdfa%3Aen%3Atechdoc&cache=cache&media=pdfa:techdoc:tn0001_pdfa-1_and_namespaces_2008-03-18.pdf */
static char *
pdf_document_get_format_from_metadata (xmlDocPtr          doc,
				       xmlXPathContextPtr xpathCtx)
{
	xmlXPathObjectPtr xpathObj;
	xmlChar *part = NULL;
	xmlChar *conf = NULL;
	char *result = NULL;
	int i;

	/* add pdf/a namespaces */
	xmlXPathRegisterNs (xpathCtx, BAD_CAST "x", BAD_CAST "adobe:ns:meta/");
	xmlXPathRegisterNs (xpathCtx, BAD_CAST "rdf", BAD_CAST "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
	xmlXPathRegisterNs (xpathCtx, BAD_CAST "pdfaid", BAD_CAST "http://www.aiim.org/pdfa/ns/id/");

	/* reads pdf/a part */
	/* first syntax: child node */
	xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/pdfaid:part", xpathCtx);
	if (xpathObj != NULL) {
		if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
			part = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);

		xmlXPathFreeObject (xpathObj);
	}
	if (part == NULL) {
		/* second syntax: attribute */
		xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/@pdfaid:part", xpathCtx);
		if (xpathObj != NULL) {
			if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
				part = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);

			xmlXPathFreeObject (xpathObj);
		}
	}

	/* reads pdf/a conformance */
	/* first syntax: child node */
	xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/pdfaid:conformance", xpathCtx);
	if (xpathObj != NULL) {
		if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
			conf = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);

		xmlXPathFreeObject (xpathObj);
	}
	if (conf == NULL) {
		/* second syntax: attribute */
		xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/@pdfaid:conformance", xpathCtx);
		if (xpathObj != NULL) {
			if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
				conf = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);

			xmlXPathFreeObject (xpathObj);
		}
	}

	if (part != NULL && conf != NULL) {
		/* makes conf lowercase */
		for (i = 0; conf[i]; i++)
			conf[i] = g_ascii_tolower (conf[i]);

		/* return buffer */
		result = g_strdup_printf ("PDF/A - %s%s", part, conf);
	}

	/* Cleanup */
	xmlFree (part);
	xmlFree (conf);

	return result;
}

static EvDocumentLicense *
pdf_document_get_license_from_metadata (xmlDocPtr          doc,
					xmlXPathContextPtr xpathCtx)
{
	xmlXPathObjectPtr xpathObj;
	xmlChar *marked = NULL;
	const char *language_string;
	char  *aux;
	gchar **tags;
	gchar *tag, *tag_aux;
	int i, j;
	EvDocumentLicense *license;

	/* register namespaces */
	xmlXPathRegisterNs (xpathCtx, BAD_CAST "x", BAD_CAST "adobe:ns:meta/");
	xmlXPathRegisterNs (xpathCtx, BAD_CAST "rdf", BAD_CAST "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
	xmlXPathRegisterNs (xpathCtx, BAD_CAST "dc", BAD_CAST "http://purl.org/dc/elements/1.1/");
	/* XMP Rights Management Schema */
	xmlXPathRegisterNs (xpathCtx, BAD_CAST "xmpRights", BAD_CAST "http://ns.adobe.com/xap/1.0/rights/");
	/* Creative Commons Schema */
	xmlXPathRegisterNs (xpathCtx, BAD_CAST "cc", BAD_CAST "http://creativecommons.org/ns#");

	/* checking if the document has been marked as defined on the XMP Rights
	 * Management Schema */
	xpathObj = xmlXPathEvalExpression (BAD_CAST LICENSE_MARKED, xpathCtx);
	if (xpathObj != NULL) {
		if (xpathObj->nodesetval != NULL &&
		    xpathObj->nodesetval->nodeNr != 0)
			marked = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
		xmlXPathFreeObject (xpathObj);
	}

	/* a) Not marked => No XMP Rights information */
	if (!marked) {
		xmlFree (marked);
		return NULL;
	}

	license = ev_document_license_new ();

	/* b) Marked False => Public Domain, no copyrighted material and no
	 * license needed */
	if (g_strrstr ((char *) marked, "False") != NULL) {
		license->text = g_strdup (_("This work is in the Public Domain"));
	/* c) Marked True => Copyrighted material */
	} else {
		/* Checking usage terms as defined by the XMP Rights Management
		 * Schema. This field is recomended to be checked by Creative
		 * Commons */
		/* 1) checking for a suitable localized string */
		language_string = pango_language_to_string (gtk_get_default_language ());
		tags = g_strsplit (language_string, "-", -1);
		i = g_strv_length (tags);
		while (i-- && !license->text) {
			tag = g_strdup (tags[0]);
			for (j = 1; j <= i; j++) {
				tag_aux = g_strdup_printf ("%s-%s", tag, tags[j]);
				g_free (tag);
				tag = tag_aux;
			}
			aux = g_strdup_printf (LICENSE_TEXT, tag);
			xpathObj = xmlXPathEvalExpression (BAD_CAST aux, xpathCtx);
			if (xpathObj != NULL) {
				if (xpathObj->nodesetval != NULL &&
				    xpathObj->nodesetval->nodeNr != 0)
					license->text = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
				xmlXPathFreeObject (xpathObj);
			}
			g_free (tag);
			g_free (aux);
		}
		g_strfreev(tags);

		/* 2) if not, use the default string */
		if (!license->text) {
			aux = g_strdup_printf (LICENSE_TEXT, "x-default");
			xpathObj = xmlXPathEvalExpression (BAD_CAST aux, xpathCtx);
			if (xpathObj != NULL) {
				if (xpathObj->nodesetval != NULL &&
				    xpathObj->nodesetval->nodeNr != 0)
					license->text = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
				xmlXPathFreeObject (xpathObj);
			}
			g_free (aux);
		}

		/* Checking the license URI as defined by the Creative Commons
		 * Schema. This field is recomended to be checked by Creative
		 * Commons */
		xpathObj = xmlXPathEvalExpression (BAD_CAST LICENSE_URI, xpathCtx);
		if (xpathObj != NULL) {
			if (xpathObj->nodesetval != NULL &&
			    xpathObj->nodesetval->nodeNr != 0)
				license->uri = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
			xmlXPathFreeObject (xpathObj);
		}

		/* Checking the web statement as defined by the XMP Rights
		 * Management Schema. Checking it out is a sort of above-and-beyond
		 * the basic recommendations by Creative Commons. It can be
		 * considered as a "reinforcement" approach to add certainty. */
		xpathObj = xmlXPathEvalExpression (BAD_CAST LICENSE_WEB_STATEMENT, xpathCtx);
		if (xpathObj != NULL) {
			if (xpathObj->nodesetval != NULL &&
			    xpathObj->nodesetval->nodeNr != 0)
				license->web_statement = (gchar *)xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
			xmlXPathFreeObject (xpathObj);
		}
	}
	xmlFree (marked);

	if (!license->text && !license->uri && !license->web_statement) {
		ev_document_license_free (license);
		return NULL;
	}

	return license;
}

static void
pdf_document_parse_metadata (const gchar    *metadata,
			     EvDocumentInfo *info)
{
	xmlDocPtr          doc;
	xmlXPathContextPtr xpathCtx;
	gchar             *fmt;

	doc = xmlParseMemory (metadata, strlen (metadata));
	if (doc == NULL)
		return;		/* invalid xml metadata */

	xpathCtx = xmlXPathNewContext (doc);
	if (xpathCtx == NULL) {
		xmlFreeDoc (doc);
		return;		/* invalid xpath context */
	}

	fmt = pdf_document_get_format_from_metadata (doc, xpathCtx);
	if (fmt != NULL) {
		g_free (info->format);
		info->format = fmt;
	}

	info->license = pdf_document_get_license_from_metadata (doc, xpathCtx);

	xmlXPathFreeContext (xpathCtx);
	xmlFreeDoc (doc);
}


static EvDocumentInfo *
pdf_document_get_info (EvDocument *document)
{
	EvDocumentInfo *info;
	PopplerPageLayout layout;
	PopplerPageMode mode;
	PopplerViewerPreferences view_prefs;
	PopplerPermissions permissions;
	char *metadata;
	gboolean linearized;

	info = g_new0 (EvDocumentInfo, 1);

	info->fields_mask = EV_DOCUMENT_INFO_TITLE |
			    EV_DOCUMENT_INFO_FORMAT |
			    EV_DOCUMENT_INFO_AUTHOR |
			    EV_DOCUMENT_INFO_SUBJECT |
			    EV_DOCUMENT_INFO_KEYWORDS |
			    EV_DOCUMENT_INFO_LAYOUT |
			    EV_DOCUMENT_INFO_START_MODE |
		            EV_DOCUMENT_INFO_PERMISSIONS |
			    EV_DOCUMENT_INFO_UI_HINTS |
			    EV_DOCUMENT_INFO_CREATOR |
			    EV_DOCUMENT_INFO_PRODUCER |
			    EV_DOCUMENT_INFO_CREATION_DATE |
			    EV_DOCUMENT_INFO_MOD_DATE |
			    EV_DOCUMENT_INFO_LINEARIZED |
			    EV_DOCUMENT_INFO_N_PAGES |
			    EV_DOCUMENT_INFO_SECURITY |
		            EV_DOCUMENT_INFO_PAPER_SIZE |
			    EV_DOCUMENT_INFO_LICENSE;

	g_object_get (PDF_DOCUMENT (document)->document,
		      "title", &(info->title),
		      "format", &(info->format),
		      "author", &(info->author),
		      "subject", &(info->subject),
		      "keywords", &(info->keywords),
		      "page-mode", &mode,
		      "page-layout", &layout,
		      "viewer-preferences", &view_prefs,
		      "permissions", &permissions,
		      "creator", &(info->creator),
		      "producer", &(info->producer),
		      "creation-datetime", &(info->creation_date),
		      "mod-datetime", &(info->modified_date),
		      "linearized", &linearized,
		      "metadata", &metadata,
		      NULL);

	if (metadata != NULL) {
		pdf_document_parse_metadata (metadata, info);
		g_free (metadata);
	}

	info->n_pages = ev_document_get_n_pages (document);

	if (info->n_pages > 0) {
		ev_document_get_page_size (document, 0,
					   &(info->paper_width),
					   &(info->paper_height));
		// Convert to mm.
		info->paper_width = info->paper_width / 72.0f * 25.4f;
		info->paper_height = info->paper_height / 72.0f * 25.4f;
	}

	switch (layout) {
		case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
			info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
			break;
		case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
			info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
			break;
		case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
			info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
			break;
		case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
			info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
		case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
			info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
			break;
		case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
			info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
			break;
	        default:
			break;
	}

	switch (mode) {
		case POPPLER_PAGE_MODE_NONE:
			info->mode = EV_DOCUMENT_MODE_NONE;
			break;
		case POPPLER_PAGE_MODE_USE_THUMBS:
			info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
			break;
		case POPPLER_PAGE_MODE_USE_OC:
			info->mode = EV_DOCUMENT_MODE_USE_OC;
			break;
		case POPPLER_PAGE_MODE_FULL_SCREEN:
			// Ignore full screen page mode, since automatically opening
			// in full screen mode is generally unwanted behavior
			//info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
			break;
		case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
			info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
	        default:
			break;
	}

	info->ui_hints = 0;
	if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
		info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
	}
	if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
		info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
	}
	if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
		info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
	}
	if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
		info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
	}
	if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
		info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
	}
	if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
		info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
	}
	if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
		info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
	}

	info->permissions = 0;
	if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
		info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
	}
	if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
		info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
	}
	if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
		info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
	}
	if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
		info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
	}

	if (ev_document_security_has_document_security (EV_DOCUMENT_SECURITY (document))) {
		/* translators: this is the document security state */
		info->security = g_strdup (_("Yes"));
	} else {
		/* translators: this is the document security state */
		info->security = g_strdup (_("No"));
	}

	info->linearized = linearized ? g_strdup (_("Yes")) : g_strdup (_("No"));

	return info;
}

static gboolean
pdf_document_get_backend_info (EvDocument *document, EvDocumentBackendInfo *info)
{
	PopplerBackend backend;

	backend = poppler_get_backend ();
	switch (backend) {
		case POPPLER_BACKEND_CAIRO:
			info->name = "poppler/cairo";
			break;
		case POPPLER_BACKEND_SPLASH:
			info->name = "poppler/splash";
			break;
		default:
			info->name = "poppler/unknown";
			break;
	}

	info->version = poppler_get_version ();

	return TRUE;
}

static gboolean
pdf_document_support_synctex (EvDocument *document)
{
	return TRUE;
}

static void
pdf_document_class_init (PdfDocumentClass *klass)
{
	GObjectClass    *g_object_class = G_OBJECT_CLASS (klass);
	EvDocumentClass *ev_document_class = EV_DOCUMENT_CLASS (klass);

	g_object_class->dispose = pdf_document_dispose;

	ev_document_class->save = pdf_document_save;
	ev_document_class->load = pdf_document_load;
	ev_document_class->get_n_pages = pdf_document_get_n_pages;
	ev_document_class->get_page = pdf_document_get_page;
	ev_document_class->get_page_size = pdf_document_get_page_size;
	ev_document_class->get_page_label = pdf_document_get_page_label;
	ev_document_class->render = pdf_document_render;
	ev_document_class->get_info = pdf_document_get_info;
	ev_document_class->get_backend_info = pdf_document_get_backend_info;
	ev_document_class->support_synctex = pdf_document_support_synctex;
}

/* EvDocumentSecurity */
static gboolean
pdf_document_has_document_security (EvDocumentSecurity *document_security)
{
	/* FIXME: do we really need to have this? */
	return FALSE;
}

static void
pdf_document_set_password (EvDocumentSecurity *document_security,
			   const char         *password)
{
	PdfDocument *document = PDF_DOCUMENT (document_security);

	if (document->password)
		g_free (document->password);

	document->password = g_strdup (password);
}

static void
pdf_document_security_iface_init (EvDocumentSecurityInterface *iface)
{
	iface->has_document_security = pdf_document_has_document_security;
	iface->set_password = pdf_document_set_password;
}

static gdouble
pdf_document_fonts_get_progress (EvDocumentFonts *document_fonts)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
	int n_pages;

        n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));

	return (double)pdf_document->fonts_scanned_pages / (double)n_pages;
}

static gboolean
pdf_document_fonts_scan (EvDocumentFonts *document_fonts,
			 int              n_pages)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
	gboolean result;

	g_return_val_if_fail (PDF_IS_DOCUMENT (document_fonts), FALSE);

	if (pdf_document->font_info == NULL) {
		pdf_document->font_info = poppler_font_info_new (pdf_document->document);
	}

	if (pdf_document->fonts_iter) {
		poppler_fonts_iter_free (pdf_document->fonts_iter);
	}

	pdf_document->fonts_scanned_pages += n_pages;

	result = poppler_font_info_scan (pdf_document->font_info, n_pages,
				         &pdf_document->fonts_iter);
	if (!result) {
		pdf_document->fonts_scanned_pages = 0;
		poppler_font_info_free (pdf_document->font_info);
		pdf_document->font_info = NULL;
	}

	return result;
}

static const char *
font_type_to_string (PopplerFontType type)
{
	switch (type) {
	        case POPPLER_FONT_TYPE_TYPE1:
			return _("Type 1");
	        case POPPLER_FONT_TYPE_TYPE1C:
			return _("Type 1C");
	        case POPPLER_FONT_TYPE_TYPE3:
			return _("Type 3");
	        case POPPLER_FONT_TYPE_TRUETYPE:
			return _("TrueType");
	        case POPPLER_FONT_TYPE_CID_TYPE0:
			return _("Type 1 (CID)");
	        case POPPLER_FONT_TYPE_CID_TYPE0C:
			return _("Type 1C (CID)");
	        case POPPLER_FONT_TYPE_CID_TYPE2:
			return _("TrueType (CID)");
	        default:
			return _("Unknown font type");
	}
}

static void
pdf_document_fonts_fill_model (EvDocumentFonts *document_fonts,
			       GtkTreeModel    *model)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
	PopplerFontsIter *iter = pdf_document->fonts_iter;

	g_return_if_fail (PDF_IS_DOCUMENT (document_fonts));

	if (!iter)
		return;

	do {
		GtkTreeIter list_iter;
		const char *name;
		const char *type;
		const char *embedded;
		char *details;

		name = poppler_fonts_iter_get_name (iter);

		if (name == NULL) {
			name = _("No name");
		}

		type = font_type_to_string (
			poppler_fonts_iter_get_font_type (iter));

		if (poppler_fonts_iter_is_embedded (iter)) {
			if (poppler_fonts_iter_is_subset (iter))
				embedded = _("Embedded subset");
			else
				embedded = _("Embedded");
		} else {
			embedded = _("Not embedded");
		}

		details = g_markup_printf_escaped ("%s\n%s", type, embedded);

		gtk_list_store_append (GTK_LIST_STORE (model), &list_iter);
		gtk_list_store_set (GTK_LIST_STORE (model), &list_iter,
				    EV_DOCUMENT_FONTS_COLUMN_NAME, name,
				    EV_DOCUMENT_FONTS_COLUMN_DETAILS, details,
				    -1);

		g_free (details);
	} while (poppler_fonts_iter_next (iter));
}

static void
pdf_document_document_fonts_iface_init (EvDocumentFontsInterface *iface)
{
	iface->fill_model = pdf_document_fonts_fill_model;
	iface->scan = pdf_document_fonts_scan;
	iface->get_progress = pdf_document_fonts_get_progress;
}

static gboolean
pdf_document_links_has_document_links (EvDocumentLinks *document_links)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
	PopplerIndexIter *iter;

	g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);

	iter = poppler_index_iter_new (pdf_document->document);
	if (iter == NULL)
		return FALSE;
	poppler_index_iter_free (iter);

	return TRUE;
}

static EvLinkDest *
ev_link_dest_from_dest (PdfDocument *pdf_document,
			PopplerDest *dest)
{
	EvLinkDest *ev_dest = NULL;
	const char *unimplemented_dest = NULL;

	g_assert (dest != NULL);

	switch (dest->type) {
	        case POPPLER_DEST_XYZ: {
			PopplerPage *poppler_page;
			double height;

			poppler_page = poppler_document_get_page (pdf_document->document,
								  MAX (0, dest->page_num - 1));
			poppler_page_get_size (poppler_page, NULL, &height);
			ev_dest = ev_link_dest_new_xyz (dest->page_num - 1,
							dest->left,
							height - MIN (height, dest->top),
							dest->zoom,
							dest->change_left,
							dest->change_top,
							dest->change_zoom);
			g_object_unref (poppler_page);
		}
			break;
	        case POPPLER_DEST_FITB:
		case POPPLER_DEST_FIT:
			ev_dest = ev_link_dest_new_fit (dest->page_num - 1);
			break;
		case POPPLER_DEST_FITBH:
	        case POPPLER_DEST_FITH: {
			PopplerPage *poppler_page;
			double height;

			poppler_page = poppler_document_get_page (pdf_document->document,
								  MAX (0, dest->page_num - 1));
			poppler_page_get_size (poppler_page, NULL, &height);
			ev_dest = ev_link_dest_new_fith (dest->page_num - 1,
							 height - MIN (height, dest->top),
							 dest->change_top);
			g_object_unref (poppler_page);
		}
			break;
		case POPPLER_DEST_FITBV:
	        case POPPLER_DEST_FITV:
			ev_dest = ev_link_dest_new_fitv (dest->page_num - 1,
							 dest->left,
							 dest->change_left);
			break;
	        case POPPLER_DEST_FITR: {
			PopplerPage *poppler_page;
			double height;

			poppler_page = poppler_document_get_page (pdf_document->document,
								  MAX (0, dest->page_num - 1));
			poppler_page_get_size (poppler_page, NULL, &height);
			ev_dest = ev_link_dest_new_fitr (dest->page_num - 1,
							 dest->left,
							 height - MIN (height, dest->bottom),
							 dest->right,
							 height - MIN (height, dest->top));
			g_object_unref (poppler_page);
		}
			break;
	        case POPPLER_DEST_NAMED:
			ev_dest = ev_link_dest_new_named (dest->named_dest);
			break;
	        case POPPLER_DEST_UNKNOWN:
			unimplemented_dest = "POPPLER_DEST_UNKNOWN";
			break;
	}

	if (unimplemented_dest) {
		g_warning ("Unimplemented destination: %s, please post a "
		           "bug report on Xreader bug tracker "
		           "(https://github.com/linuxmint/xreader/issues) with a testcase.",
			   unimplemented_dest);
	}

	if (!ev_dest)
		ev_dest = ev_link_dest_new_page (dest->page_num - 1);

	return ev_dest;
}

static EvLink *
ev_link_from_action (PdfDocument   *pdf_document,
		     PopplerAction *action)
{
	EvLink       *link = NULL;
	EvLinkAction *ev_action = NULL;
	const char   *unimplemented_action = NULL;

	switch (action->type) {
	        case POPPLER_ACTION_NONE:
			break;
	        case POPPLER_ACTION_GOTO_DEST: {
			EvLinkDest *dest;

			dest = ev_link_dest_from_dest (pdf_document, action->goto_dest.dest);
			ev_action = ev_link_action_new_dest (dest);
			g_object_unref (dest);
		}
			break;
	        case POPPLER_ACTION_GOTO_REMOTE: {
			EvLinkDest *dest;

			dest = ev_link_dest_from_dest (pdf_document, action->goto_remote.dest);
			ev_action = ev_link_action_new_remote (dest,
							       action->goto_remote.file_name);
			g_object_unref (dest);

		}
			break;
	        case POPPLER_ACTION_LAUNCH:
			ev_action = ev_link_action_new_launch (action->launch.file_name,
							       action->launch.params);
			break;
	        case POPPLER_ACTION_URI:
			ev_action = ev_link_action_new_external_uri (action->uri.uri);
			break;
	        case POPPLER_ACTION_NAMED:
			ev_action = ev_link_action_new_named (action->named.named_dest);
			break;
	        case POPPLER_ACTION_MOVIE:
			unimplemented_action = "POPPLER_ACTION_MOVIE";
			break;
	        case POPPLER_ACTION_RENDITION:
			unimplemented_action = "POPPLER_ACTION_RENDITION";
			break;
	        case POPPLER_ACTION_OCG_STATE: {
			GList *on_list = NULL;
			GList *off_list = NULL;
			GList *toggle_list = NULL;
			GList *l, *m;

			for (l = action->ocg_state.state_list; l; l = g_list_next (l)) {
				PopplerActionLayer *action_layer = (PopplerActionLayer *)l->data;

				for (m = action_layer->layers; m; m = g_list_next (m)) {
					PopplerLayer *layer = (PopplerLayer *)m->data;
					EvLayer      *ev_layer;

					ev_layer = ev_layer_new (poppler_layer_is_parent (layer),
								 poppler_layer_get_radio_button_group_id (layer));
					g_object_set_data_full (G_OBJECT (ev_layer),
								"poppler-layer",
								g_object_ref (layer),
								(GDestroyNotify)g_object_unref);

					switch (action_layer->action) {
					case POPPLER_ACTION_LAYER_ON:
						on_list = g_list_prepend (on_list, ev_layer);
						break;
					case POPPLER_ACTION_LAYER_OFF:
						off_list = g_list_prepend (off_list, ev_layer);
						break;
					case POPPLER_ACTION_LAYER_TOGGLE:
						toggle_list = g_list_prepend (toggle_list, ev_layer);
						break;
					}
				}
			}

			/* The action takes the ownership of the lists */
			ev_action = ev_link_action_new_layers_state (g_list_reverse (on_list),
								     g_list_reverse (off_list),
								     g_list_reverse (toggle_list));


		}
			break;
	        case POPPLER_ACTION_JAVASCRIPT:
			unimplemented_action = "POPPLER_ACTION_JAVASCRIPT";
			break;
	        case POPPLER_ACTION_UNKNOWN:
			unimplemented_action = "POPPLER_ACTION_UNKNOWN";
	}

	if (unimplemented_action && action_message == NULL) {
		g_warning ("Unimplemented action: %s, please post a bug report "
			   "on Xreader bug tracker (https://github.com/linuxmint/xreader/issues) "
			   "with a testcase.", unimplemented_action);
        action_message = unimplemented_action;
	}

	link = ev_link_new (action->any.title, ev_action);

    if (G_IS_OBJECT (ev_action))
    {
        g_object_unref (ev_action);
    }

	return link;
}

static void
build_tree (PdfDocument      *pdf_document,
	    GtkTreeModel     *model,
	    GtkTreeIter      *parent,
	    PopplerIndexIter *iter)
{

	do {
		GtkTreeIter tree_iter;
		PopplerIndexIter *child;
		PopplerAction *action;
		EvLink *link = NULL;
		gboolean expand;
		char *title_markup;

		action = poppler_index_iter_get_action (iter);
		expand = poppler_index_iter_is_open (iter);

		if (!action)
			continue;

		/* Block zoom change when action link is pressed (bug fix #175) */
		if (action->goto_dest.dest)
			action->goto_dest.dest->change_zoom = 0;

		link = ev_link_from_action (pdf_document, action);
		if (!link || strlen (ev_link_get_title (link)) <= 0) {
			poppler_action_free (action);
			if (link)
				g_object_unref (link);

			continue;
		}

		gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
		title_markup = g_markup_escape_text (ev_link_get_title (link), -1);

		gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
				    EV_DOCUMENT_LINKS_COLUMN_MARKUP, title_markup,
				    EV_DOCUMENT_LINKS_COLUMN_LINK, link,
				    EV_DOCUMENT_LINKS_COLUMN_EXPAND, expand,
				    -1);

		g_free (title_markup);
		g_object_unref (link);

		child = poppler_index_iter_get_child (iter);
		if (child)
			build_tree (pdf_document, model, &tree_iter, child);
		poppler_index_iter_free (child);
		poppler_action_free (action);

	} while (poppler_index_iter_next (iter));
}

static GtkTreeModel *
pdf_document_links_get_links_model (EvDocumentLinks *document_links)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
	GtkTreeModel *model = NULL;
	PopplerIndexIter *iter;

	g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);

	iter = poppler_index_iter_new (pdf_document->document);
	/* Create the model if we have items*/
	if (iter != NULL) {
		model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
							     G_TYPE_STRING,
							     G_TYPE_OBJECT,
							     G_TYPE_BOOLEAN,
							     G_TYPE_STRING);
		build_tree (pdf_document, model, NULL, iter);
		poppler_index_iter_free (iter);
	}

	return model;
}

static EvMappingList *
pdf_document_links_get_links (EvDocumentLinks *document_links,
			      EvPage          *page)
{
	PdfDocument *pdf_document;
	PopplerPage *poppler_page;
	GList *retval = NULL;
	GList *mapping_list;
	GList *list;
	double height;

	pdf_document = PDF_DOCUMENT (document_links);
	poppler_page = POPPLER_PAGE (page->backend_page);
	mapping_list = poppler_page_get_link_mapping (poppler_page);
	poppler_page_get_size (poppler_page, NULL, &height);

	for (list = mapping_list; list; list = list->next) {
		PopplerLinkMapping *link_mapping;
		EvMapping *ev_link_mapping;

		link_mapping = (PopplerLinkMapping *)list->data;
		ev_link_mapping = g_new (EvMapping, 1);
		ev_link_mapping->data = ev_link_from_action (pdf_document,
							     link_mapping->action);
		ev_link_mapping->area.x1 = link_mapping->area.x1;
		ev_link_mapping->area.x2 = link_mapping->area.x2;
		/* Invert this for X-style coordinates */
		ev_link_mapping->area.y1 = height - link_mapping->area.y2;
		ev_link_mapping->area.y2 = height - link_mapping->area.y1;

		retval = g_list_prepend (retval, ev_link_mapping);
	}

	poppler_page_free_link_mapping (mapping_list);

	return ev_mapping_list_new (page->index, g_list_reverse (retval), (GDestroyNotify)g_object_unref);
}

static EvLinkDest *
pdf_document_links_find_link_dest (EvDocumentLinks  *document_links,
				   const gchar      *link_name)
{
	PdfDocument *pdf_document;
	PopplerDest *dest;
	EvLinkDest *ev_dest = NULL;

	pdf_document = PDF_DOCUMENT (document_links);
	dest = poppler_document_find_dest (pdf_document->document,
					   link_name);
	if (dest) {
		ev_dest = ev_link_dest_from_dest (pdf_document, dest);
		poppler_dest_free (dest);
	}

	return ev_dest;
}

static gint
pdf_document_links_find_link_page (EvDocumentLinks  *document_links,
				   const gchar      *link_name)
{
	PdfDocument *pdf_document;
	PopplerDest *dest;
	gint         retval = -1;

	pdf_document = PDF_DOCUMENT (document_links);
	dest = poppler_document_find_dest (pdf_document->document,
					   link_name);
	if (dest) {
		retval = dest->page_num - 1;
		poppler_dest_free (dest);
	}

	return retval;
}

static void
pdf_document_document_links_iface_init (EvDocumentLinksInterface *iface)
{
	iface->has_document_links = pdf_document_links_has_document_links;
	iface->get_links_model = pdf_document_links_get_links_model;
	iface->get_links = pdf_document_links_get_links;
	iface->find_link_dest = pdf_document_links_find_link_dest;
	iface->find_link_page = pdf_document_links_find_link_page;
}

static EvMappingList *
pdf_document_images_get_image_mapping (EvDocumentImages *document_images,
				       EvPage           *page)
{
	GList *retval = NULL;
	PopplerPage *poppler_page;
	GList *mapping_list;
	GList *list;

	poppler_page = POPPLER_PAGE (page->backend_page);
	mapping_list = poppler_page_get_image_mapping (poppler_page);

	for (list = mapping_list; list; list = list->next) {
		PopplerImageMapping *image_mapping;
		EvMapping *ev_image_mapping;

		image_mapping = (PopplerImageMapping *)list->data;

		ev_image_mapping = g_new (EvMapping, 1);

		ev_image_mapping->data = ev_image_new (page->index, image_mapping->image_id);
		ev_image_mapping->area.x1 = image_mapping->area.x1;
		ev_image_mapping->area.y1 = image_mapping->area.y1;
		ev_image_mapping->area.x2 = image_mapping->area.x2;
		ev_image_mapping->area.y2 = image_mapping->area.y2;

		retval = g_list_prepend (retval, ev_image_mapping);
	}

	poppler_page_free_image_mapping (mapping_list);

	return ev_mapping_list_new (page->index, g_list_reverse (retval), (GDestroyNotify)g_object_unref);
}

GdkPixbuf *
pdf_document_images_get_image (EvDocumentImages *document_images,
			       EvImage          *image)
{
	GdkPixbuf       *retval = NULL;
	PdfDocument     *pdf_document;
	PopplerPage     *poppler_page;
	cairo_surface_t *surface;

	pdf_document = PDF_DOCUMENT (document_images);
	poppler_page = poppler_document_get_page (pdf_document->document,
						  ev_image_get_page (image));

	surface = poppler_page_get_image (poppler_page, ev_image_get_id (image));
	if (surface) {
		retval = ev_document_misc_pixbuf_from_surface (surface);
		cairo_surface_destroy (surface);
	}

	g_object_unref (poppler_page);

	return retval;
}

static void
pdf_document_document_images_iface_init (EvDocumentImagesInterface *iface)
{
	iface->get_image_mapping = pdf_document_images_get_image_mapping;
	iface->get_image = pdf_document_images_get_image;
}

static GdkPixbuf *
make_thumbnail_for_page (PopplerPage     *poppler_page,
			 EvRenderContext *rc,
			 gint             width,
			 gint             height)
{
	GdkPixbuf *pixbuf;
	cairo_surface_t *surface;

	ev_document_fc_mutex_lock ();
	surface = pdf_page_render (poppler_page, width, height, rc);
	ev_document_fc_mutex_unlock ();

	pixbuf = ev_document_misc_pixbuf_from_surface (surface);
	cairo_surface_destroy (surface);

	return pixbuf;
}

static GdkPixbuf *
pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
				       EvRenderContext      *rc,
				       gboolean              border)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document_thumbnails);
	PopplerPage *poppler_page;
	cairo_surface_t *surface;
	GdkPixbuf *pixbuf = NULL;
	GdkPixbuf *border_pixbuf;
	gint width, height;

	poppler_page = POPPLER_PAGE (rc->page->backend_page);

	pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document),
						rc, &width, &height);

	surface = poppler_page_get_thumbnail (poppler_page);
	if (surface) {
		pixbuf = ev_document_misc_pixbuf_from_surface (surface);
		cairo_surface_destroy (surface);
	}

	if (pixbuf != NULL) {
		int thumb_width = (rc->rotation == 90 || rc->rotation == 270) ?
			gdk_pixbuf_get_height (pixbuf) :
			gdk_pixbuf_get_width (pixbuf);

		if (thumb_width == width) {
			GdkPixbuf *rotated_pixbuf;

			rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf,
								   (GdkPixbufRotation) (360 - rc->rotation));
			g_object_unref (pixbuf);
			pixbuf = rotated_pixbuf;
		} else {
			/* The provided thumbnail has a different size */
			g_object_unref (pixbuf);
			pixbuf = make_thumbnail_for_page (poppler_page, rc, width, height);
		}
	} else {
		/* There is no provided thumbnail. We need to make one. */
		pixbuf = make_thumbnail_for_page (poppler_page, rc, width, height);
	}

        if (border && pixbuf) {
		border_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
		g_object_unref (pixbuf);
		pixbuf = border_pixbuf;
	}

	return pixbuf;
}

static void
pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
					EvRenderContext      *rc,
					gint                 *width,
					gint                 *height)
{
	double page_width, page_height;

	poppler_page_get_size (POPPLER_PAGE (rc->page->backend_page),
			       &page_width, &page_height);

	*width = MAX ((gint)(page_width * rc->scale + 0.5), 1);
	*height = MAX ((gint)(page_height * rc->scale + 0.5), 1);

	if (rc->rotation == 90 || rc->rotation == 270) {
		gint  temp;

		temp = *width;
		*width = *height;
		*height = temp;
	}
}

static void
pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *iface)
{
	iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
	iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
}


static GList *
pdf_document_find_find_text (EvDocumentFind *document_find,
			     EvPage         *page,
			     const gchar    *text,
			     gboolean        case_sensitive)
{
	GList *matches, *l;
	PopplerPage *poppler_page;
	gdouble height;
	GList *retval = NULL;
	PopplerFindFlags options = POPPLER_FIND_DEFAULT;

	g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);
	g_return_val_if_fail (text != NULL, NULL);

	poppler_page = POPPLER_PAGE (page->backend_page);

	if (case_sensitive)
		options = POPPLER_FIND_CASE_SENSITIVE;

	matches = poppler_page_find_text_with_options (poppler_page, text, options);
	if (!matches)
		return NULL;

	poppler_page_get_size (poppler_page, NULL, &height);
	for (l = matches; l && l->data; l = g_list_next (l)) {
		PopplerRectangle *rect = (PopplerRectangle *)l->data;
		EvRectangle      *ev_rect;

		ev_rect = ev_rectangle_new ();
		ev_rect->x1 = rect->x1;
		ev_rect->x2 = rect->x2;
		/* Invert this for X-style coordinates */
		ev_rect->y1 = height - rect->y2;
		ev_rect->y2 = height - rect->y1;

		retval = g_list_prepend (retval, ev_rect);
	}

	g_list_foreach (matches, (GFunc)poppler_rectangle_free, NULL);
	g_list_free (matches);

	return g_list_reverse (retval);
}

static void
pdf_document_find_iface_init (EvDocumentFindInterface *iface)
{
        iface->find_text = pdf_document_find_find_text;
}

static void
pdf_print_context_free (PdfPrintContext *ctx)
{
	if (!ctx)
		return;

#ifdef HAVE_CAIRO_PRINT
	if (ctx->cr) {
		cairo_destroy (ctx->cr);
		ctx->cr = NULL;
	}
#else
	if (ctx->ps_file) {
		poppler_ps_file_free (ctx->ps_file);
		ctx->ps_file = NULL;
	}
#endif
	g_free (ctx);
}

static void
pdf_document_file_exporter_begin (EvFileExporter        *exporter,
				  EvFileExporterContext *fc)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
	PdfPrintContext *ctx;
#ifdef HAVE_CAIRO_PRINT
	cairo_surface_t *surface = NULL;
#endif

	if (pdf_document->print_ctx)
		pdf_print_context_free (pdf_document->print_ctx);
	pdf_document->print_ctx = g_new0 (PdfPrintContext, 1);
	ctx = pdf_document->print_ctx;
	ctx->format = fc->format;

#ifdef HAVE_CAIRO_PRINT
	ctx->pages_per_sheet = CLAMP (fc->pages_per_sheet, 1, 16);

	ctx->paper_width = fc->paper_width;
	ctx->paper_height = fc->paper_height;

	switch (fc->pages_per_sheet) {
	        default:
	        case 1:
			ctx->pages_x = 1;
			ctx->pages_y = 1;
			break;
	        case 2:
			ctx->pages_x = 1;
			ctx->pages_y = 2;
			break;
	        case 4:
			ctx->pages_x = 2;
			ctx->pages_y = 2;
			break;
	        case 6:
			ctx->pages_x = 2;
			ctx->pages_y = 3;
			break;
	        case 9:
			ctx->pages_x = 3;
			ctx->pages_y = 3;
			break;
	        case 16:
			ctx->pages_x = 4;
			ctx->pages_y = 4;
			break;
	}

	ctx->pages_printed = 0;

	switch (fc->format) {
	        case EV_FILE_FORMAT_PS:
#ifdef HAVE_CAIRO_PS
			surface = cairo_ps_surface_create (fc->filename, fc->paper_width, fc->paper_height);
#endif
			break;
	        case EV_FILE_FORMAT_PDF:
#ifdef HAVE_CAIRO_PDF
			surface = cairo_pdf_surface_create (fc->filename, fc->paper_width, fc->paper_height);
#endif
			break;
	        default:
			g_assert_not_reached ();
	}

	ctx->cr = cairo_create (surface);
	cairo_surface_destroy (surface);

#else /* HAVE_CAIRO_PRINT */
	if (ctx->format == EV_FILE_FORMAT_PS) {
		ctx->ps_file = poppler_ps_file_new (pdf_document->document,
						    fc->filename, fc->first_page,
						    fc->last_page - fc->first_page + 1);
		poppler_ps_file_set_paper_size (ctx->ps_file, fc->paper_width, fc->paper_height);
		poppler_ps_file_set_duplex (ctx->ps_file, fc->duplex);
	}
#endif /* HAVE_CAIRO_PRINT */
}

static void
pdf_document_file_exporter_begin_page (EvFileExporter *exporter)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
	PdfPrintContext *ctx = pdf_document->print_ctx;

	g_return_if_fail (pdf_document->print_ctx != NULL);

	ctx->pages_printed = 0;

#ifdef HAVE_CAIRO_PRINT
	if (ctx->paper_width > ctx->paper_height) {
		if (ctx->format == EV_FILE_FORMAT_PS) {
			cairo_ps_surface_set_size (cairo_get_target (ctx->cr),
						   ctx->paper_height,
						   ctx->paper_width);
		} else if (ctx->format == EV_FILE_FORMAT_PDF) {
			cairo_pdf_surface_set_size (cairo_get_target (ctx->cr),
						    ctx->paper_height,
						    ctx->paper_width);
		}
	}
#endif /* HAVE_CAIRO_PRINT */
}

static void
pdf_document_file_exporter_do_page (EvFileExporter  *exporter,
				    EvRenderContext *rc)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
	PdfPrintContext *ctx = pdf_document->print_ctx;
	PopplerPage *poppler_page;
#ifdef HAVE_CAIRO_PRINT
	gdouble  page_width, page_height;
	gint     x, y;
	gboolean rotate;
	gdouble  width, height;
	gdouble  pwidth, pheight;
	gdouble  xscale, yscale;
#endif

	g_return_if_fail (pdf_document->print_ctx != NULL);

	poppler_page = POPPLER_PAGE (rc->page->backend_page);

#ifdef HAVE_CAIRO_PRINT
	x = (ctx->pages_printed % ctx->pages_per_sheet) % ctx->pages_x;
	y = (ctx->pages_printed % ctx->pages_per_sheet) / ctx->pages_x;
	poppler_page_get_size (poppler_page, &page_width, &page_height);

	if (page_width > page_height && page_width > ctx->paper_width) {
		rotate = TRUE;
	} else {
		rotate = FALSE;
	}

	/* Use always portrait mode and rotate when necessary */
	if (ctx->paper_width > ctx->paper_height) {
		width = ctx->paper_height;
		height = ctx->paper_width;
		rotate = !rotate;
	} else {
		width = ctx->paper_width;
		height = ctx->paper_height;
	}

	if (ctx->pages_per_sheet == 2 || ctx->pages_per_sheet == 6) {
		rotate = !rotate;
	}

	if (rotate) {
		gint tmp1;
		gdouble tmp2;

		tmp1 = x;
		x = y;
		y = tmp1;

		tmp2 = page_width;
		page_width = page_height;
		page_height = tmp2;
	}

	pwidth = width / ctx->pages_x;
	pheight = height / ctx->pages_y;

	if ((page_width > pwidth || page_height > pheight) ||
	    (page_width < pwidth && page_height < pheight)) {
		xscale = pwidth / page_width;
		yscale = pheight / page_height;

		if (yscale < xscale) {
			xscale = yscale;
		} else {
			yscale = xscale;
		}

	} else {
		xscale = yscale = 1;
	}

	/* TODO: center */

	cairo_save (ctx->cr);
	if (rotate) {
		cairo_matrix_t matrix;

		cairo_translate (ctx->cr, (2 * y + 1) * pwidth, 0);
		cairo_matrix_init (&matrix,
				   0,  1,
				   -1,  0,
				   0,  0);
		cairo_transform (ctx->cr, &matrix);
	}

	cairo_translate (ctx->cr,
			 x * (rotate ? pheight : pwidth),
			 y * (rotate ? pwidth : pheight));
	cairo_scale (ctx->cr, xscale, yscale);

	poppler_page_render_for_printing (poppler_page, ctx->cr);

	ctx->pages_printed++;

	cairo_restore (ctx->cr);
#else /* HAVE_CAIRO_PRINT */
	if (ctx->format == EV_FILE_FORMAT_PS)
		poppler_page_render_to_ps (poppler_page, ctx->ps_file);
#endif /* HAVE_CAIRO_PRINT */
}

static void
pdf_document_file_exporter_end_page (EvFileExporter *exporter)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (exporter);

	g_return_if_fail (pdf_document->print_ctx != NULL);

#ifdef HAVE_CAIRO_PRINT
	cairo_show_page (ctx->cr);
#endif
}

static void
pdf_document_file_exporter_end (EvFileExporter *exporter)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (exporter);

	pdf_print_context_free (pdf_document->print_ctx);
	pdf_document->print_ctx = NULL;
}

static EvFileExporterCapabilities
pdf_document_file_exporter_get_capabilities (EvFileExporter *exporter)
{
	return  (EvFileExporterCapabilities) (
		EV_FILE_EXPORTER_CAN_PAGE_SET |
		EV_FILE_EXPORTER_CAN_COPIES |
		EV_FILE_EXPORTER_CAN_COLLATE |
		EV_FILE_EXPORTER_CAN_REVERSE |
		EV_FILE_EXPORTER_CAN_SCALE |
#ifdef HAVE_CAIRO_PRINT
		EV_FILE_EXPORTER_CAN_NUMBER_UP |
#endif

#ifdef HAVE_CAIRO_PDF
		EV_FILE_EXPORTER_CAN_GENERATE_PDF |
#endif
		EV_FILE_EXPORTER_CAN_GENERATE_PS);
}

static void
pdf_document_file_exporter_iface_init (EvFileExporterInterface *iface)
{
        iface->begin = pdf_document_file_exporter_begin;
	iface->begin_page = pdf_document_file_exporter_begin_page;
        iface->do_page = pdf_document_file_exporter_do_page;
	iface->end_page = pdf_document_file_exporter_end_page;
        iface->end = pdf_document_file_exporter_end;
	iface->get_capabilities = pdf_document_file_exporter_get_capabilities;
}

/* EvDocumentPrint */
static void
pdf_document_print_print_page (EvDocumentPrint *document,
			       EvPage          *page,
			       cairo_t         *cr)
{
	poppler_page_render_for_printing (POPPLER_PAGE (page->backend_page), cr);
}

static void
pdf_document_document_print_iface_init (EvDocumentPrintInterface *iface)
{
	iface->print_page = pdf_document_print_print_page;
}

static void
pdf_selection_render_selection (EvSelection      *selection,
				EvRenderContext  *rc,
				cairo_surface_t **surface,
				EvRectangle      *points,
				EvRectangle      *old_points,
				EvSelectionStyle  style,
				GdkColor         *text,
				GdkColor         *base)
{
	PopplerPage *poppler_page;
	cairo_t *cr;
	PopplerColor text_color, base_color;
	double width_points, height_points;
	gint width, height;

	poppler_page = POPPLER_PAGE (rc->page->backend_page);

	poppler_page_get_size (poppler_page,
			       &width_points, &height_points);
	width = (int) ((width_points * rc->scale) + 0.5);
	height = (int) ((height_points * rc->scale) + 0.5);

	text_color.red = text->red;
	text_color.green = text->green;
	text_color.blue = text->blue;

	base_color.red = base->red;
	base_color.green = base->green;
	base_color.blue = base->blue;

	if (*surface == NULL) {
		*surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
						       width, height);

	}

	cr = cairo_create (*surface);
	cairo_scale (cr, rc->scale, rc->scale);
	cairo_surface_set_device_offset (*surface, 0, 0);
	memset (cairo_image_surface_get_data (*surface), 0x00,
		cairo_image_surface_get_height (*surface) *
		cairo_image_surface_get_stride (*surface));
	poppler_page_render_selection (poppler_page,
				       cr,
				       (PopplerRectangle *)points,
				       (PopplerRectangle *)old_points,
				       (PopplerSelectionStyle)style,
				       &text_color,
				       &base_color);
	cairo_destroy (cr);
}

static gchar *
pdf_selection_get_selected_text (EvSelection     *selection,
				 EvPage          *page,
				 EvSelectionStyle style,
				 EvRectangle     *points)
{
	g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);

	return poppler_page_get_selected_text (POPPLER_PAGE (page->backend_page),
					       (PopplerSelectionStyle)style,
					       (PopplerRectangle *)points);
}

static cairo_region_t *
create_region_from_poppler_region (GList *region, gdouble scale)
{
	GList *l;
	cairo_region_t *retval;

	retval = cairo_region_create ();

	for (l = region; l; l = g_list_next (l)) {
		PopplerRectangle   *rectangle;
		cairo_rectangle_int_t rect;

		rectangle = (PopplerRectangle *)l->data;

		rect.x = (gint) ((rectangle->x1 * scale) + 0.5);
		rect.y = (gint) ((rectangle->y1 * scale) + 0.5);
		rect.width  = (gint) (((rectangle->x2 - rectangle->x1) * scale) + 0.5);
		rect.height = (gint) (((rectangle->y2 - rectangle->y1) * scale) + 0.5);
		cairo_region_union_rectangle (retval, &rect);

		poppler_rectangle_free (rectangle);
	}

	return retval;
}

static cairo_region_t *
pdf_selection_get_selection_region (EvSelection     *selection,
				    EvRenderContext *rc,
				    EvSelectionStyle style,
				    EvRectangle     *points)
{
	PopplerPage    *poppler_page;
	cairo_region_t *retval;
	GList          *region;

	poppler_page = POPPLER_PAGE (rc->page->backend_page);
	region = poppler_page_get_selection_region (poppler_page,
						    1.0,
						    (PopplerSelectionStyle)style,
						    (PopplerRectangle *) points);
	retval = create_region_from_poppler_region (region, rc->scale);
	g_list_free (region);

	return retval;
}

static void
pdf_selection_iface_init (EvSelectionInterface *iface)
{
        iface->render_selection = pdf_selection_render_selection;
	iface->get_selected_text = pdf_selection_get_selected_text;
        iface->get_selection_region = pdf_selection_get_selection_region;
}


/* EvDocumentText */
static cairo_region_t *
pdf_document_text_get_text_mapping (EvDocumentText *document_text,
				    EvPage         *page)
{
	PopplerPage *poppler_page;
	PopplerRectangle points;
	GList *region;
	cairo_region_t *retval;

	g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);

	poppler_page = POPPLER_PAGE (page->backend_page);

	points.x1 = 0.0;
	points.y1 = 0.0;
	poppler_page_get_size (poppler_page, &(points.x2), &(points.y2));

	region = poppler_page_get_selection_region (poppler_page, 1.0,
						    POPPLER_SELECTION_GLYPH,
						    &points);
	retval = create_region_from_poppler_region (region, 1.0);
	g_list_free (region);

	return retval;
}

static gchar *
pdf_document_text_get_text (EvDocumentText  *selection,
			    EvPage          *page)
{
	g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);

	return poppler_page_get_text (POPPLER_PAGE (page->backend_page));
}

static gboolean
pdf_document_text_get_text_layout (EvDocumentText  *selection,
				   EvPage          *page,
				   EvRectangle    **areas,
				   guint           *n_areas)
{
	g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), FALSE);

	return poppler_page_get_text_layout (POPPLER_PAGE (page->backend_page),
					     (PopplerRectangle **)areas, n_areas);
}

static void
pdf_document_text_iface_init (EvDocumentTextInterface *iface)
{
        iface->get_text_mapping = pdf_document_text_get_text_mapping;
        iface->get_text = pdf_document_text_get_text;
        iface->get_text_layout = pdf_document_text_get_text_layout;
}

/* Page Transitions */
static gdouble
pdf_document_get_page_duration (EvDocumentTransition *trans,
				gint                  page)
{
	PdfDocument *pdf_document;
	PopplerPage *poppler_page;
	gdouble      duration = -1;

	pdf_document = PDF_DOCUMENT (trans);
	poppler_page = poppler_document_get_page (pdf_document->document, page);
	if (!poppler_page)
		return -1;

	duration = poppler_page_get_duration (poppler_page);
	g_object_unref (poppler_page);

	return duration;
}

static EvTransitionEffect *
pdf_document_get_effect (EvDocumentTransition *trans,
			 gint                  page)
{
	PdfDocument            *pdf_document;
	PopplerPage            *poppler_page;
	PopplerPageTransition  *page_transition;
	EvTransitionEffect     *effect;

	pdf_document = PDF_DOCUMENT (trans);
	poppler_page = poppler_document_get_page (pdf_document->document, page);

	if (!poppler_page)
		return NULL;

	page_transition = poppler_page_get_transition (poppler_page);

	if (!page_transition) {
		g_object_unref (poppler_page);
		return NULL;
	}

	/* enums in PopplerPageTransition match the EvTransitionEffect ones */
	effect = ev_transition_effect_new ((EvTransitionEffectType) page_transition->type,
					   "alignment", page_transition->alignment,
					   "direction", page_transition->direction,
					   "duration", page_transition->duration,
					   "angle", page_transition->angle,
					   "scale", page_transition->scale,
					   "rectangular", page_transition->rectangular,
					   NULL);

	poppler_page_transition_free (page_transition);
	g_object_unref (poppler_page);

	return effect;
}

static void
pdf_document_page_transition_iface_init (EvDocumentTransitionInterface *iface)
{
	iface->get_page_duration = pdf_document_get_page_duration;
	iface->get_effect = pdf_document_get_effect;
}

/* Forms */
#if 0
static void
pdf_document_get_crop_box (EvDocument  *document,
			   int          page,
			   EvRectangle *rect)
{
	PdfDocument *pdf_document;
	PopplerPage *poppler_page;
	PopplerRectangle poppler_rect;

	pdf_document = PDF_DOCUMENT (document);
	poppler_page = poppler_document_get_page (pdf_document->document, page);
	poppler_page_get_crop_box (poppler_page, &poppler_rect);
	rect->x1 = poppler_rect.x1;
	rect->x2 = poppler_rect.x2;
	rect->y1 = poppler_rect.y1;
	rect->y2 = poppler_rect.y2;
}
#endif

static EvFormField *
ev_form_field_from_poppler_field (PopplerFormField *poppler_field)
{
	EvFormField *ev_field = NULL;
	gint         id;
	gdouble      font_size;
	gboolean     is_read_only;

	id = poppler_form_field_get_id (poppler_field);
	font_size = poppler_form_field_get_font_size (poppler_field);
	is_read_only = poppler_form_field_is_read_only (poppler_field);

	switch (poppler_form_field_get_field_type (poppler_field)) {
	        case POPPLER_FORM_FIELD_TEXT: {
			EvFormFieldText    *field_text;
			EvFormFieldTextType ev_text_type = EV_FORM_FIELD_TEXT_NORMAL;

			switch (poppler_form_field_text_get_text_type (poppler_field)) {
			        case POPPLER_FORM_TEXT_NORMAL:
					ev_text_type = EV_FORM_FIELD_TEXT_NORMAL;
					break;
			        case POPPLER_FORM_TEXT_MULTILINE:
					ev_text_type = EV_FORM_FIELD_TEXT_MULTILINE;
					break;
			        case POPPLER_FORM_TEXT_FILE_SELECT:
					ev_text_type = EV_FORM_FIELD_TEXT_FILE_SELECT;
					break;
			}

			ev_field = ev_form_field_text_new (id, ev_text_type);
			field_text = EV_FORM_FIELD_TEXT (ev_field);

			field_text->do_spell_check = poppler_form_field_text_do_spell_check (poppler_field);
			field_text->do_scroll = poppler_form_field_text_do_scroll (poppler_field);
			field_text->is_rich_text = poppler_form_field_text_is_rich_text (poppler_field);
			field_text->is_password = poppler_form_field_text_is_password (poppler_field);
			field_text->max_len = poppler_form_field_text_get_max_len (poppler_field);
			field_text->text = poppler_form_field_text_get_text (poppler_field);

		}
			break;
	        case POPPLER_FORM_FIELD_BUTTON: {
			EvFormFieldButton    *field_button;
			EvFormFieldButtonType ev_button_type = EV_FORM_FIELD_BUTTON_PUSH;

			switch (poppler_form_field_button_get_button_type (poppler_field)) {
			        case POPPLER_FORM_BUTTON_PUSH:
					ev_button_type = EV_FORM_FIELD_BUTTON_PUSH;
					break;
			        case POPPLER_FORM_BUTTON_CHECK:
					ev_button_type = EV_FORM_FIELD_BUTTON_CHECK;
					break;
			        case POPPLER_FORM_BUTTON_RADIO:
					ev_button_type = EV_FORM_FIELD_BUTTON_RADIO;
					break;
			}

			ev_field = ev_form_field_button_new (id, ev_button_type);
			field_button = EV_FORM_FIELD_BUTTON (ev_field);

			field_button->state = poppler_form_field_button_get_state (poppler_field);
		}
			break;
	        case POPPLER_FORM_FIELD_CHOICE: {
			EvFormFieldChoice    *field_choice;
			EvFormFieldChoiceType ev_choice_type = EV_FORM_FIELD_CHOICE_COMBO;

			switch (poppler_form_field_choice_get_choice_type (poppler_field)) {
			        case POPPLER_FORM_CHOICE_COMBO:
					ev_choice_type = EV_FORM_FIELD_CHOICE_COMBO;
					break;
			        case EV_FORM_FIELD_CHOICE_LIST:
					ev_choice_type = EV_FORM_FIELD_CHOICE_LIST;
					break;
			}

			ev_field = ev_form_field_choice_new (id, ev_choice_type);
			field_choice = EV_FORM_FIELD_CHOICE (ev_field);

			field_choice->is_editable = poppler_form_field_choice_is_editable (poppler_field);
			field_choice->multi_select = poppler_form_field_choice_can_select_multiple (poppler_field);
			field_choice->do_spell_check = poppler_form_field_choice_do_spell_check (poppler_field);
			field_choice->commit_on_sel_change = poppler_form_field_choice_commit_on_change (poppler_field);

			/* TODO: we need poppler_form_field_choice_get_selected_items in poppler
			field_choice->selected_items = poppler_form_field_choice_get_selected_items (poppler_field);*/
			if (field_choice->is_editable)
				field_choice->text = poppler_form_field_choice_get_text (poppler_field);
		}
			break;
	        case POPPLER_FORM_FIELD_SIGNATURE:
			/* TODO */
			ev_field = ev_form_field_signature_new (id);
			break;
	        case POPPLER_FORM_FIELD_UNKNOWN:
			return NULL;
	}

	ev_field->font_size = font_size;
	ev_field->is_read_only = is_read_only;

	return ev_field;
}

static EvMappingList *
pdf_document_forms_get_form_fields (EvDocumentForms *document,
				    EvPage          *page)
{
 	PopplerPage *poppler_page;
 	GList *retval = NULL;
 	GList *fields;
 	GList *list;
 	double height;

	g_return_val_if_fail (POPPLER_IS_PAGE (page->backend_page), NULL);

 	poppler_page = POPPLER_PAGE (page->backend_page);
 	fields = poppler_page_get_form_field_mapping (poppler_page);
 	poppler_page_get_size (poppler_page, NULL, &height);

 	for (list = fields; list; list = list->next) {
 		PopplerFormFieldMapping *mapping;
 		EvMapping *field_mapping;
		EvFormField *ev_field;

 		mapping = (PopplerFormFieldMapping *)list->data;

		ev_field = ev_form_field_from_poppler_field (mapping->field);
		if (!ev_field)
			continue;

 		field_mapping = g_new0 (EvMapping, 1);
		field_mapping->area.x1 = mapping->area.x1;
		field_mapping->area.x2 = mapping->area.x2;
		field_mapping->area.y1 = height - mapping->area.y2;
		field_mapping->area.y2 = height - mapping->area.y1;
		field_mapping->data = ev_field;
		ev_field->page = EV_PAGE (g_object_ref (page));

		g_object_set_data_full (G_OBJECT (ev_field),
					"poppler-field",
					g_object_ref (mapping->field),
					(GDestroyNotify) g_object_unref);

		retval = g_list_prepend (retval, field_mapping);
	}

	poppler_page_free_form_field_mapping (fields);

	return retval ? ev_mapping_list_new (page->index,
					     g_list_reverse (retval),
					     (GDestroyNotify)g_object_unref) : NULL;
}

static gboolean
pdf_document_forms_document_is_modified (EvDocumentForms *document)
{
	return PDF_DOCUMENT (document)->forms_modified;
}

static gchar *
pdf_document_forms_form_field_text_get_text (EvDocumentForms *document,
					     EvFormField     *field)

{
	PopplerFormField *poppler_field;
	gchar *text;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return NULL;

	text = poppler_form_field_text_get_text (poppler_field);

	return text;
}

static void
pdf_document_forms_form_field_text_set_text (EvDocumentForms *document,
					     EvFormField     *field,
					     const gchar     *text)
{
	PopplerFormField *poppler_field;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return;

	poppler_form_field_text_set_text (poppler_field, text);
	PDF_DOCUMENT (document)->forms_modified = TRUE;
}

static void
pdf_document_forms_form_field_button_set_state (EvDocumentForms *document,
						EvFormField     *field,
						gboolean         state)
{
	PopplerFormField *poppler_field;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return;

	poppler_form_field_button_set_state (poppler_field, state);
	PDF_DOCUMENT (document)->forms_modified = TRUE;
}

static gboolean
pdf_document_forms_form_field_button_get_state (EvDocumentForms *document,
						EvFormField     *field)
{
	PopplerFormField *poppler_field;
	gboolean state;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return FALSE;

	state = poppler_form_field_button_get_state (poppler_field);

	return state;
}

static gchar *
pdf_document_forms_form_field_choice_get_item (EvDocumentForms *document,
					       EvFormField     *field,
					       gint             index)
{
	PopplerFormField *poppler_field;
	gchar *text;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return NULL;

	text = poppler_form_field_choice_get_item (poppler_field, index);

	return text;
}

static int
pdf_document_forms_form_field_choice_get_n_items (EvDocumentForms *document,
						  EvFormField     *field)
{
	PopplerFormField *poppler_field;
	gint n_items;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return -1;

	n_items = poppler_form_field_choice_get_n_items (poppler_field);

	return n_items;
}

static gboolean
pdf_document_forms_form_field_choice_is_item_selected (EvDocumentForms *document,
						       EvFormField     *field,
						       gint             index)
{
	PopplerFormField *poppler_field;
	gboolean selected;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return FALSE;

	selected = poppler_form_field_choice_is_item_selected (poppler_field, index);

	return selected;
}

static void
pdf_document_forms_form_field_choice_select_item (EvDocumentForms *document,
						  EvFormField     *field,
						  gint             index)
{
	PopplerFormField *poppler_field;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return;

	poppler_form_field_choice_select_item (poppler_field, index);
	PDF_DOCUMENT (document)->forms_modified = TRUE;
}

static void
pdf_document_forms_form_field_choice_toggle_item (EvDocumentForms *document,
						  EvFormField     *field,
						  gint             index)
{
	PopplerFormField *poppler_field;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return;

	poppler_form_field_choice_toggle_item (poppler_field, index);
	PDF_DOCUMENT (document)->forms_modified = TRUE;
}

static void
pdf_document_forms_form_field_choice_unselect_all (EvDocumentForms *document,
						   EvFormField     *field)
{
	PopplerFormField *poppler_field;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return;

	poppler_form_field_choice_unselect_all (poppler_field);
	PDF_DOCUMENT (document)->forms_modified = TRUE;
}

static void
pdf_document_forms_form_field_choice_set_text (EvDocumentForms *document,
					       EvFormField     *field,
					       const gchar     *text)
{
	PopplerFormField *poppler_field;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return;

	poppler_form_field_choice_set_text (poppler_field, text);
	PDF_DOCUMENT (document)->forms_modified = TRUE;
}

static gchar *
pdf_document_forms_form_field_choice_get_text (EvDocumentForms *document,
					       EvFormField     *field)
{
	PopplerFormField *poppler_field;
	gchar *text;

	poppler_field = POPPLER_FORM_FIELD (g_object_get_data (G_OBJECT (field), "poppler-field"));
	if (!poppler_field)
		return NULL;

	text = poppler_form_field_choice_get_text (poppler_field);

	return text;
}

static void
pdf_document_document_forms_iface_init (EvDocumentFormsInterface *iface)
{
	iface->get_form_fields = pdf_document_forms_get_form_fields;
	iface->document_is_modified = pdf_document_forms_document_is_modified;
	iface->form_field_text_get_text = pdf_document_forms_form_field_text_get_text;
	iface->form_field_text_set_text = pdf_document_forms_form_field_text_set_text;
	iface->form_field_button_set_state = pdf_document_forms_form_field_button_set_state;
	iface->form_field_button_get_state = pdf_document_forms_form_field_button_get_state;
	iface->form_field_choice_get_item = pdf_document_forms_form_field_choice_get_item;
	iface->form_field_choice_get_n_items = pdf_document_forms_form_field_choice_get_n_items;
	iface->form_field_choice_is_item_selected = pdf_document_forms_form_field_choice_is_item_selected;
	iface->form_field_choice_select_item = pdf_document_forms_form_field_choice_select_item;
	iface->form_field_choice_toggle_item = pdf_document_forms_form_field_choice_toggle_item;
	iface->form_field_choice_unselect_all = pdf_document_forms_form_field_choice_unselect_all;
	iface->form_field_choice_set_text = pdf_document_forms_form_field_choice_set_text;
	iface->form_field_choice_get_text = pdf_document_forms_form_field_choice_get_text;
}

/* Annotations */
static void
poppler_annot_color_to_gdk_rgba (PopplerAnnot *poppler_annot,
                                 GdkRGBA      *color)
{
	PopplerColor *poppler_color;

	poppler_color = poppler_annot_get_color (poppler_annot);
	if (poppler_color) {
		color->red = CLAMP ((double) poppler_color->red / 65535.0, 0.0, 1.0);
		color->green = CLAMP ((double) poppler_color->green / 65535.0, 0.0, 1.0),
		color->blue = CLAMP ((double) poppler_color->blue / 65535.0, 0.0, 1.0),
		color->alpha = 1.0;

		g_free (poppler_color);
	} /* TODO: else use a default color */
}

static void
poppler_annot_color_from_gdk_rgba (PopplerAnnot *poppler_annot,
                                   GdkRGBA      *color)
{
	PopplerColor poppler_color;

	g_return_if_fail (color != NULL);
	g_return_if_fail (POPPLER_IS_ANNOT (poppler_annot));

	poppler_color.red = CLAMP ((guint) (color->red * 65535), 0, 65535);
	poppler_color.green = CLAMP ((guint) (color->green * 65535), 0, 65535);
	poppler_color.blue = CLAMP ((guint) (color->blue * 65535), 0, 65535);
	poppler_annot_set_color (poppler_annot, &poppler_color);
}

static EvAnnotationTextIcon
get_annot_text_icon (PopplerAnnotText *poppler_annot)
{
	gchar *icon = poppler_annot_text_get_icon (poppler_annot);
	EvAnnotationTextIcon retval;

	if (!icon)
		return EV_ANNOTATION_TEXT_ICON_UNKNOWN;

	if (strcmp (icon, POPPLER_ANNOT_TEXT_ICON_NOTE) == 0)
		retval = EV_ANNOTATION_TEXT_ICON_NOTE;
	else if (strcmp (icon, POPPLER_ANNOT_TEXT_ICON_COMMENT) == 0)
		retval = EV_ANNOTATION_TEXT_ICON_COMMENT;
	else if (strcmp (icon, POPPLER_ANNOT_TEXT_ICON_KEY) == 0)
		retval = EV_ANNOTATION_TEXT_ICON_KEY;
	else if (strcmp (icon, POPPLER_ANNOT_TEXT_ICON_HELP) == 0)
		retval = EV_ANNOTATION_TEXT_ICON_HELP;
	else if (strcmp (icon, POPPLER_ANNOT_TEXT_ICON_NEW_PARAGRAPH) == 0)
		retval = EV_ANNOTATION_TEXT_ICON_NEW_PARAGRAPH;
	else if (strcmp (icon, POPPLER_ANNOT_TEXT_ICON_PARAGRAPH) == 0)
		retval = EV_ANNOTATION_TEXT_ICON_PARAGRAPH;
	else if (strcmp (icon, POPPLER_ANNOT_TEXT_ICON_INSERT) == 0)
		retval = EV_ANNOTATION_TEXT_ICON_INSERT;
	else if (strcmp (icon, POPPLER_ANNOT_TEXT_ICON_CROSS) == 0)
		retval = EV_ANNOTATION_TEXT_ICON_CROSS;
	else if (strcmp (icon, POPPLER_ANNOT_TEXT_ICON_CIRCLE) == 0)
		retval = EV_ANNOTATION_TEXT_ICON_CIRCLE;
	else
		retval = EV_ANNOTATION_TEXT_ICON_UNKNOWN;

	g_free (icon);

	return retval;
}

static const gchar *
get_poppler_annot_text_icon (EvAnnotationTextIcon icon)
{
	switch (icon) {
	case EV_ANNOTATION_TEXT_ICON_NOTE:
		return POPPLER_ANNOT_TEXT_ICON_NOTE;
	case EV_ANNOTATION_TEXT_ICON_COMMENT:
		return POPPLER_ANNOT_TEXT_ICON_COMMENT;
	case EV_ANNOTATION_TEXT_ICON_KEY:
		return POPPLER_ANNOT_TEXT_ICON_KEY;
	case EV_ANNOTATION_TEXT_ICON_HELP:
		return POPPLER_ANNOT_TEXT_ICON_HELP;
	case EV_ANNOTATION_TEXT_ICON_NEW_PARAGRAPH:
		return POPPLER_ANNOT_TEXT_ICON_NEW_PARAGRAPH;
	case EV_ANNOTATION_TEXT_ICON_PARAGRAPH:
		return POPPLER_ANNOT_TEXT_ICON_PARAGRAPH;
	case EV_ANNOTATION_TEXT_ICON_INSERT:
		return POPPLER_ANNOT_TEXT_ICON_INSERT;
	case EV_ANNOTATION_TEXT_ICON_CROSS:
		return POPPLER_ANNOT_TEXT_ICON_CROSS;
	case EV_ANNOTATION_TEXT_ICON_CIRCLE:
		return POPPLER_ANNOT_TEXT_ICON_CIRCLE;
	case EV_ANNOTATION_TEXT_ICON_UNKNOWN:
	default:
		return POPPLER_ANNOT_TEXT_ICON_NOTE;
	}
}

static gboolean
poppler_annot_can_have_popup_window (PopplerAnnot *poppler_annot)
{
	switch (poppler_annot_get_annot_type (poppler_annot)) {
	case POPPLER_ANNOT_TEXT:
	case POPPLER_ANNOT_LINE:
	case POPPLER_ANNOT_SQUARE:
	case POPPLER_ANNOT_CIRCLE:
	case POPPLER_ANNOT_POLYGON:
	case POPPLER_ANNOT_POLY_LINE:
	case POPPLER_ANNOT_HIGHLIGHT:
	case POPPLER_ANNOT_UNDERLINE:
	case POPPLER_ANNOT_SQUIGGLY:
	case POPPLER_ANNOT_STRIKE_OUT:
	case POPPLER_ANNOT_STAMP:
	case POPPLER_ANNOT_CARET:
	case POPPLER_ANNOT_INK:
	case POPPLER_ANNOT_FILE_ATTACHMENT:
		return TRUE;
	default:
		return FALSE;
	}
}

static EvAnnotation *
ev_annot_from_poppler_annot (PopplerAnnot *poppler_annot,
			     EvPage       *page)
{
	EvAnnotation *ev_annot = NULL;
	const gchar  *unimplemented_annot = NULL;
	gboolean reported_annot = FALSE;

	switch (poppler_annot_get_annot_type (poppler_annot)) {
	        case POPPLER_ANNOT_TEXT: {
			PopplerAnnotText *poppler_text;
			EvAnnotationText *ev_annot_text;

			poppler_text = POPPLER_ANNOT_TEXT (poppler_annot);

			ev_annot = ev_annotation_text_new (page);

			ev_annot_text = EV_ANNOTATION_TEXT (ev_annot);
			ev_annotation_text_set_is_open (ev_annot_text,
							poppler_annot_text_get_is_open (poppler_text));
			ev_annotation_text_set_icon (ev_annot_text, get_annot_text_icon (poppler_text));
		}
			break;
	        case POPPLER_ANNOT_FILE_ATTACHMENT: {
			PopplerAnnotFileAttachment *poppler_annot_attachment;
			PopplerAttachment          *poppler_attachment;
			gchar                      *data = NULL;
			gsize                       size;
			GError                     *error = NULL;

			poppler_annot_attachment = POPPLER_ANNOT_FILE_ATTACHMENT (poppler_annot);
			poppler_attachment = poppler_annot_file_attachment_get_attachment (poppler_annot_attachment);

			if (poppler_attachment &&
			    attachment_save_to_buffer (poppler_attachment, &data, &size, &error)) {
				EvAttachment *ev_attachment;
				GDateTime *poppler_attachment_mtime = poppler_attachment_get_mtime (poppler_attachment);
				GDateTime *poppler_attachment_ctime = poppler_attachment_get_ctime (poppler_attachment);

				ev_attachment = ev_attachment_new (poppler_attachment->name,
								   poppler_attachment->description,
                                   poppler_attachment_mtime,
                                   poppler_attachment_ctime,
								   size, data);
				ev_annot = ev_annotation_attachment_new (page, ev_attachment);
				g_object_unref (ev_attachment);
			} else if (error) {
				g_warning ("%s", error->message);
				g_error_free (error);
			}

			if (poppler_attachment)
				g_object_unref (poppler_attachment);
		}
			break;
		case POPPLER_ANNOT_HIGHLIGHT:
			ev_annot = ev_annotation_text_markup_highlight_new (page);
			break;
	        case POPPLER_ANNOT_STRIKE_OUT:
			ev_annot = ev_annotation_text_markup_strike_out_new (page);
			break;
	        case POPPLER_ANNOT_UNDERLINE:
			ev_annot = ev_annotation_text_markup_underline_new (page);
			break;
	        case POPPLER_ANNOT_SQUIGGLY:
			ev_annot = ev_annotation_text_markup_squiggly_new (page);
			break;
	        case POPPLER_ANNOT_LINK:
	        case POPPLER_ANNOT_WIDGET:
			/* Ignore link and widgets annots since they are already handled */
			break;
			case POPPLER_ANNOT_3D:
			case POPPLER_ANNOT_CARET:
			case POPPLER_ANNOT_FREE_TEXT:
			case POPPLER_ANNOT_LINE:
			case POPPLER_ANNOT_SCREEN:
			case POPPLER_ANNOT_MOVIE:
			case POPPLER_ANNOT_SOUND:
			case POPPLER_ANNOT_INK:
			case POPPLER_ANNOT_POLYGON:
			case POPPLER_ANNOT_CIRCLE:
			case POPPLER_ANNOT_SQUARE:
			case POPPLER_ANNOT_STAMP: {
				/* FIXME: These annotations are unimplemented, but they were already
				 * reported with test case.  We add a special
				 * warning to let the user know it is unimplemented, yet we do not
				 * want more duplicates of known issues.
				 */
				GEnumValue *enum_value;
				reported_annot = TRUE;

				enum_value = g_enum_get_value ((GEnumClass *) g_type_class_ref (POPPLER_TYPE_ANNOT_TYPE),
								   poppler_annot_get_annot_type (poppler_annot));
				unimplemented_annot = enum_value ? enum_value->value_name : "Unknown annotation";
			}
			break;
	        default: {
			GEnumValue *enum_value;
			reported_annot = FALSE;

			enum_value = g_enum_get_value ((GEnumClass *) g_type_class_ref (POPPLER_TYPE_ANNOT_TYPE),
						       poppler_annot_get_annot_type (poppler_annot));
			unimplemented_annot = enum_value ? enum_value->value_name : "Unknown annotation";
		}
	}

	if (unimplemented_annot) {
		if (reported_annot) {
			g_warning ("Unimplemented annotation: %s.  It is a known issue "
			           "and it might be implemented in the future.",
				   unimplemented_annot);
		} else {
			g_warning ("Unimplemented annotation: %s, please post a "
				       "bug report on Xreader bug tracker "
				       "(https://github.com/linuxmint/xreader/issues) with a testcase.",
				   unimplemented_annot);
		}
	}

	if (ev_annot) {
		time_t   utime;
		gchar   *modified;
		gchar   *contents;
		gchar   *name;
		GdkRGBA  color;

		contents = poppler_annot_get_contents (poppler_annot);
		if (contents) {
			ev_annotation_set_contents (ev_annot, contents);
			g_free (contents);
		}

		name = poppler_annot_get_name (poppler_annot);
		if (name) {
			ev_annotation_set_name (ev_annot, name);
			g_free (name);
		}

		modified = poppler_annot_get_modified (poppler_annot);
		if (poppler_date_parse (modified, &utime)) {
			ev_annotation_set_modified_from_time (ev_annot, utime);
		} else {
			ev_annotation_set_modified (ev_annot, modified);
		}
		g_free (modified);

		poppler_annot_color_to_gdk_rgba (poppler_annot, &color);
		ev_annotation_set_rgba (ev_annot, &color);

		if (poppler_annot_can_have_popup_window (poppler_annot)) {
			PopplerAnnotMarkup *markup;
			gchar *label;
			gdouble opacity;
			PopplerRectangle poppler_rect;

			markup = POPPLER_ANNOT_MARKUP (poppler_annot);

			if (poppler_annot_markup_get_popup_rectangle (markup, &poppler_rect)) {
				EvRectangle ev_rect;
				gboolean is_open;
				gdouble height;

				poppler_page_get_size (POPPLER_PAGE (page->backend_page),
						       NULL, &height);
				ev_rect.x1 = poppler_rect.x1;
				ev_rect.x2 = poppler_rect.x2;
				ev_rect.y1 = height - poppler_rect.y2;
				ev_rect.y2 = height - poppler_rect.y1;

				is_open = poppler_annot_markup_get_popup_is_open (markup);

				g_object_set (ev_annot,
					      "rectangle", &ev_rect,
					      "popup_is_open", is_open,
					      "has_popup", TRUE,
					      NULL);
			} else {
				g_object_set (ev_annot,
					      "has_popup", FALSE,
					      NULL);
			}

			label = poppler_annot_markup_get_label (markup);
			opacity = poppler_annot_markup_get_opacity (markup);

			g_object_set (ev_annot,
				      "label", label,
				      "opacity", opacity,
				      "can_have_popup", TRUE,
				      NULL);

			g_free (label);
		}
	}

	return ev_annot;
}

static void
annot_set_unique_name (EvAnnotation *annot)
{
	gchar *name;

	name = g_strdup_printf ("annot-%" G_GUINT64_FORMAT, g_get_real_time ());
	ev_annotation_set_name (annot, name);
	g_free (name);
}

static void
annot_area_changed_cb (EvAnnotation *annot,
		       GParamSpec   *spec,
		       EvMapping    *mapping)
{
	ev_annotation_get_area (annot, &mapping->area);
}

static EvMappingList *
pdf_document_annotations_get_annotations (EvDocumentAnnotations *document_annotations,
					  EvPage                *page)
{
	GList *retval = NULL;
	PdfDocument *pdf_document;
	PopplerPage *poppler_page;
	EvMappingList *mapping_list;
	GList *annots;
	GList *list;
	gdouble height;
	gint i = 0;

	pdf_document = PDF_DOCUMENT (document_annotations);
	poppler_page = POPPLER_PAGE (page->backend_page);

	if (pdf_document->annots) {
		mapping_list = (EvMappingList *)g_hash_table_lookup (pdf_document->annots,
								     GINT_TO_POINTER (page->index));
		if (mapping_list)
			return ev_mapping_list_ref (mapping_list);
	}

	annots = poppler_page_get_annot_mapping (poppler_page);
	poppler_page_get_size (poppler_page, NULL, &height);

	for (list = annots; list; list = list->next) {
		PopplerAnnotMapping *mapping;
		EvMapping           *annot_mapping;
		EvAnnotation        *ev_annot;

		mapping = (PopplerAnnotMapping *)list->data;

		ev_annot = ev_annot_from_poppler_annot (mapping->annot, page);
		if (!ev_annot)
			continue;

		i++;

		/* Make sure annot has a unique name */
		if (!ev_annotation_get_name (ev_annot))
			annot_set_unique_name (ev_annot);

		annot_mapping = g_new (EvMapping, 1);
		if (EV_IS_ANNOTATION_TEXT (ev_annot)) {
			/* Force 24x24 rectangle */
			annot_mapping->area.x1 = mapping->area.x1;
			annot_mapping->area.x2 = annot_mapping->area.x1 + 24;
			annot_mapping->area.y1 = height - mapping->area.y2;
			annot_mapping->area.y2 = MIN(height, annot_mapping->area.y1 + 24);
		} else {
			annot_mapping->area.x1 = mapping->area.x1;
			annot_mapping->area.x2 = mapping->area.x2;
			annot_mapping->area.y1 = height - mapping->area.y2;
			annot_mapping->area.y2 = height - mapping->area.y1;
		}
		annot_mapping->data = ev_annot;
		ev_annotation_set_area (ev_annot, &annot_mapping->area);
		g_signal_connect (ev_annot, "notify::area",
				  G_CALLBACK (annot_area_changed_cb),
				  annot_mapping);

		g_object_set_data_full (G_OBJECT (ev_annot),
					"poppler-annot",
					g_object_ref (mapping->annot),
					(GDestroyNotify) g_object_unref);

		retval = g_list_prepend (retval, annot_mapping);
	}

	poppler_page_free_annot_mapping (annots);

	if (!retval)
		return NULL;

	if (!pdf_document->annots) {
		pdf_document->annots = g_hash_table_new_full (g_direct_hash,
							      g_direct_equal,
							      (GDestroyNotify)NULL,
							      (GDestroyNotify)ev_mapping_list_unref);
	}

	mapping_list = ev_mapping_list_new (page->index, g_list_reverse (retval), (GDestroyNotify)g_object_unref);
	g_hash_table_insert (pdf_document->annots,
			     GINT_TO_POINTER (page->index),
			     ev_mapping_list_ref (mapping_list));

	return mapping_list;
}

static gboolean
pdf_document_annotations_document_is_modified (EvDocumentAnnotations *document_annotations)
{
	return PDF_DOCUMENT (document_annotations)->annots_modified;
}

static void
pdf_document_annotations_remove_annotation (EvDocumentAnnotations *document_annotations,
                                            EvAnnotation          *annot)
{
        PopplerPage   *poppler_page;
        PdfDocument   *pdf_document;
        EvPage        *page;
        PopplerAnnot  *poppler_annot;
        EvMappingList *mapping_list;
        EvMapping     *annot_mapping;

        poppler_annot = POPPLER_ANNOT (g_object_get_data (G_OBJECT (annot), "poppler-annot"));
        pdf_document = PDF_DOCUMENT (document_annotations);
        page = ev_annotation_get_page (annot);
        poppler_page = POPPLER_PAGE (page->backend_page);

        poppler_page_remove_annot (poppler_page, poppler_annot);

        /* We don't check for pdf_document->annots, if it were NULL then something is really wrong */
        mapping_list = (EvMappingList *)g_hash_table_lookup (pdf_document->annots,
                                                             GINT_TO_POINTER (page->index));
        if (mapping_list) {
                annot_mapping = ev_mapping_list_find (mapping_list, annot);
                ev_mapping_list_remove (mapping_list, annot_mapping);
                if (ev_mapping_list_length (mapping_list) == 0)
                        g_hash_table_remove (pdf_document->annots, GINT_TO_POINTER (page->index));
        }

        pdf_document->annots_modified = TRUE;
}

/* FIXME: this could be moved to poppler */
static GArray *
get_quads_for_area (PopplerPage      *page,
		    EvRectangle      *area,
		    PopplerRectangle *bbox)
{
	GList  *rects, *l;
	guint   n_rects;
	guint   i;
	GArray *quads;
	gdouble height;
	gdouble max_x, max_y, min_x, min_y;

	if (bbox) {
		bbox->x1 = G_MAXDOUBLE;
		bbox->y1 = G_MAXDOUBLE;
		bbox->x2 = G_MINDOUBLE;
		bbox->y2 = G_MINDOUBLE;
	}

	poppler_page_get_size (page, NULL, &height);

	rects = poppler_page_get_selection_region (page, 1.0, POPPLER_SELECTION_GLYPH,
						   (PopplerRectangle *)area);
	n_rects = g_list_length (rects);

	quads = g_array_sized_new (TRUE, TRUE,
				   sizeof (PopplerQuadrilateral),
				   n_rects);
	g_array_set_size (quads, MAX (1, n_rects));

	for (l = rects, i = 0; i < n_rects; i++, l = l->next) {
		PopplerRectangle     *r = (PopplerRectangle *) l->data;
		PopplerQuadrilateral *quad = &g_array_index (quads, PopplerQuadrilateral, i);

		quad->p1.x = r->x1;
		quad->p1.y = height - r->y1;
		quad->p2.x = r->x2;
		quad->p2.y = height - r->y1;
		quad->p3.x = r->x1;
		quad->p3.y = height - r->y2;
		quad->p4.x = r->x2;
		quad->p4.y = height - r->y2;
		poppler_rectangle_free (r);

		if (!bbox)
			continue;

		max_x = MAX (quad->p1.x, MAX (quad->p2.x, MAX (quad->p3.x, quad->p4.x)));
		max_y = MAX (quad->p1.y, MAX (quad->p2.y, MAX (quad->p3.y, quad->p4.y)));
		min_x = MIN (quad->p1.x, MIN (quad->p2.x, MIN (quad->p3.x, quad->p4.x)));
		min_y = MIN (quad->p1.y, MIN (quad->p2.y, MIN (quad->p3.y, quad->p4.y)));

		if (min_x < bbox->x1)
			bbox->x1 = min_x;
		if (min_y < bbox->y1)
			bbox->y1 = min_y;
		if (max_x > bbox->x2)
			bbox->x2 = max_x;
		if (max_y > bbox->y2)
			bbox->y2 = max_y;
	}
	g_list_free (rects);

	if (n_rects == 0 && bbox) {
		bbox->x1 = 0;
		bbox->y1 = 0;
		bbox->x2 = 0;
		bbox->y2 = 0;
	}

	return quads;
}

static void
pdf_document_annotations_add_annotation (EvDocumentAnnotations *document_annotations,
					 EvAnnotation          *annot,
					 EvRectangle           *rect_deprecated)
{
	PopplerAnnot    *poppler_annot;
	PdfDocument     *pdf_document;
	EvPage          *page;
	PopplerPage     *poppler_page;
	GList           *list = NULL;
	EvMappingList   *mapping_list;
	EvMapping       *annot_mapping;
	PopplerRectangle poppler_rect;
	gdouble          height;
	GdkRGBA          color;
	EvRectangle      rect;

	pdf_document = PDF_DOCUMENT (document_annotations);
	page = ev_annotation_get_page (annot);
	poppler_page = POPPLER_PAGE (page->backend_page);

	ev_annotation_get_area (annot, &rect);

	poppler_page_get_size (poppler_page, NULL, &height);
	poppler_rect.x1 = rect.x1;
	poppler_rect.x2 = rect.x2;
	poppler_rect.y1 = height - rect.y2;
	poppler_rect.y2 = height - rect.y1;

	switch (ev_annotation_get_annotation_type (annot)) {
		case EV_ANNOTATION_TYPE_TEXT: {
			EvAnnotationText    *text = EV_ANNOTATION_TEXT (annot);
			EvAnnotationTextIcon icon;

	poppler_annot = poppler_annot_text_new (pdf_document->document, &poppler_rect);

			icon = ev_annotation_text_get_icon (text);
			poppler_annot_text_set_icon (POPPLER_ANNOT_TEXT (poppler_annot),
						     get_poppler_annot_text_icon (icon));
			}
			break;
		case EV_ANNOTATION_TYPE_TEXT_MARKUP: {
			GArray *quads;
			PopplerRectangle bbox;

			quads = get_quads_for_area (poppler_page, &rect, &bbox);

			if (bbox.x1 != 0 && bbox.y1 != 0 && bbox.x2 != 0 && bbox.y2 != 0) {
				poppler_rect.x1 = rect.x1 = bbox.x1;
				poppler_rect.x2 = rect.x2 = bbox.x2;
				poppler_rect.y1 = rect.y1 = height - bbox.y2;
				poppler_rect.y2 = rect.y2 = height - bbox.y1;

				ev_annotation_set_area (annot, &rect);
			}

			switch (ev_annotation_text_markup_get_markup_type (EV_ANNOTATION_TEXT_MARKUP (annot))) {
				case EV_ANNOTATION_TEXT_MARKUP_HIGHLIGHT:
					poppler_annot = poppler_annot_text_markup_new_highlight (pdf_document->document, &poppler_rect, quads);
					break;
				default:
					g_assert_not_reached ();
			}
			g_array_unref (quads);
		}
			break;
		default:
			g_assert_not_reached ();
	}

	ev_annotation_get_rgba (annot, &color);
	poppler_annot_color_from_gdk_rgba (poppler_annot, &color);

	if (EV_IS_ANNOTATION_MARKUP (annot)) {
		EvAnnotationMarkup *markup = EV_ANNOTATION_MARKUP (annot);
		const gchar *label;

		if (ev_annotation_markup_has_popup (markup)) {
			EvRectangle popup_rect;

			ev_annotation_markup_get_rectangle (markup, &popup_rect);
			poppler_rect.x1 = popup_rect.x1;
			poppler_rect.x2 = popup_rect.x2;
			poppler_rect.y1 = height - popup_rect.y2;
			poppler_rect.y2 = height - popup_rect.y1;
			poppler_annot_markup_set_popup (POPPLER_ANNOT_MARKUP (poppler_annot), &poppler_rect);
			poppler_annot_markup_set_popup_is_open (POPPLER_ANNOT_MARKUP (poppler_annot),
								ev_annotation_markup_get_popup_is_open (markup));
		}

		label = ev_annotation_markup_get_label (markup);
		if (label)
			poppler_annot_markup_set_label (POPPLER_ANNOT_MARKUP (poppler_annot), label);
	}

	if (EV_IS_ANNOTATION_TEXT (annot)) {
		EvAnnotationText    *text = EV_ANNOTATION_TEXT (annot);
		EvAnnotationTextIcon icon;

		icon = ev_annotation_text_get_icon (text);
		poppler_annot_text_set_icon (POPPLER_ANNOT_TEXT (poppler_annot),
					     get_poppler_annot_text_icon (icon));
	}
	poppler_page_add_annot (poppler_page, poppler_annot);

	annot_mapping = g_new (EvMapping, 1);
	annot_mapping->area = rect;
	annot_mapping->data = annot;
	g_signal_connect (annot, "notify::area",
			  G_CALLBACK (annot_area_changed_cb),
			  annot_mapping);
	g_object_set_data_full (G_OBJECT (annot),
				"poppler-annot",
				poppler_annot,
				(GDestroyNotify) g_object_unref);

	if (pdf_document->annots) {
		mapping_list = (EvMappingList *)g_hash_table_lookup (pdf_document->annots,
								     GINT_TO_POINTER (page->index));
	} else {
		pdf_document->annots = g_hash_table_new_full (g_direct_hash,
							      g_direct_equal,
							      (GDestroyNotify)NULL,
							      (GDestroyNotify)ev_mapping_list_unref);
		mapping_list = NULL;
	}

	if (mapping_list) {
		list = ev_mapping_list_get_list (mapping_list);
		list = g_list_append (list, annot_mapping);
	} else {
		list = g_list_append (list, annot_mapping);
		mapping_list = ev_mapping_list_new (page->index, list, (GDestroyNotify)g_object_unref);
		g_hash_table_insert (pdf_document->annots,
				     GINT_TO_POINTER (page->index),
				     ev_mapping_list_ref (mapping_list));
	}

	pdf_document->annots_modified = TRUE;
}

/* FIXME: We could probably add this to poppler */
static void
copy_poppler_annot (PopplerAnnot* src_annot,
		    PopplerAnnot* dst_annot)
{
	char         *contents;
	PopplerColor *color;

	contents = poppler_annot_get_contents (src_annot);
	poppler_annot_set_contents (dst_annot, contents);
	g_free (contents);

	poppler_annot_set_flags (dst_annot, poppler_annot_get_flags (src_annot));

	color = poppler_annot_get_color (src_annot);
	poppler_annot_set_color (dst_annot, color);
	g_free (color);

	if (POPPLER_IS_ANNOT_MARKUP (src_annot) && POPPLER_IS_ANNOT_MARKUP (dst_annot)) {
		PopplerAnnotMarkup *src_markup = POPPLER_ANNOT_MARKUP (src_annot);
		PopplerAnnotMarkup *dst_markup = POPPLER_ANNOT_MARKUP (dst_annot);
		char               *label;

		label = poppler_annot_markup_get_label (src_markup);
		poppler_annot_markup_set_label (dst_markup, label);
		g_free (label);

		poppler_annot_markup_set_opacity (dst_markup, poppler_annot_markup_get_opacity (src_markup));

		if (poppler_annot_markup_has_popup (src_markup)) {
			PopplerRectangle popup_rect;

			if (poppler_annot_markup_get_popup_rectangle (src_markup, &popup_rect)) {
				poppler_annot_markup_set_popup (dst_markup, &popup_rect);
				poppler_annot_markup_set_popup_is_open (dst_markup, poppler_annot_markup_get_popup_is_open (src_markup));
			}

		}
	}
}

static void
pdf_document_annotations_save_annotation (EvDocumentAnnotations *document_annotations,
					  EvAnnotation          *annot,
					  EvAnnotationsSaveMask  mask)
{
	PopplerAnnot *poppler_annot;

	poppler_annot = POPPLER_ANNOT (g_object_get_data (G_OBJECT (annot), "poppler-annot"));
	if (!poppler_annot)
		return;

	if (mask & EV_ANNOTATIONS_SAVE_CONTENTS)
		poppler_annot_set_contents (poppler_annot,
					    ev_annotation_get_contents (annot));

	if (mask & EV_ANNOTATIONS_SAVE_COLOR) {
		GdkRGBA ev_color;

		ev_annotation_get_rgba (annot, &ev_color);
		poppler_annot_color_from_gdk_rgba (poppler_annot, &ev_color);
	}

	if (mask & EV_ANNOTATIONS_SAVE_AREA && !EV_IS_ANNOTATION_TEXT_MARKUP (annot)) {
		EvRectangle      area;
		PopplerRectangle poppler_rect;
		EvPage          *page;
		gdouble          height;

		page = ev_annotation_get_page (annot);
		poppler_page_get_size (POPPLER_PAGE (page->backend_page), NULL, &height);

		ev_annotation_get_area (annot, &area);
		poppler_rect.x1 = area.x1;
		poppler_rect.x2 = area.x2;
		poppler_rect.y1 = height - area.y2;
		poppler_rect.y2 = height - area.y1;
		poppler_annot_set_rectangle (poppler_annot, &poppler_rect);
	}

	if (EV_IS_ANNOTATION_MARKUP (annot)) {
		EvAnnotationMarkup *ev_markup = EV_ANNOTATION_MARKUP (annot);
		PopplerAnnotMarkup *markup = POPPLER_ANNOT_MARKUP (poppler_annot);

		if (mask & EV_ANNOTATIONS_SAVE_LABEL)
			poppler_annot_markup_set_label (markup, ev_annotation_markup_get_label (ev_markup));
		if (mask & EV_ANNOTATIONS_SAVE_OPACITY)
			poppler_annot_markup_set_opacity (markup, ev_annotation_markup_get_opacity (ev_markup));
		if (mask & EV_ANNOTATIONS_SAVE_POPUP_RECT) {
			EvPage *page;
			EvRectangle ev_rect;
			PopplerRectangle poppler_rect;
			gdouble height;

			page = ev_annotation_get_page (annot);
			poppler_page_get_size (POPPLER_PAGE (page->backend_page),
						NULL, &height);
			ev_annotation_markup_get_rectangle (ev_markup, &ev_rect);

			poppler_rect.x1 = ev_rect.x1;
			poppler_rect.x2 = ev_rect.x2;
			poppler_rect.y1 = height - ev_rect.y2;
			poppler_rect.y2 = height - ev_rect.y1;

			if (poppler_annot_markup_has_popup (markup))
#ifdef HAVE_POPPLER_ANNOT_MARKUP_SET_POPUP_RECTANGLE
				poppler_annot_markup_set_popup_rectangle (markup, &poppler_rect);
#else
			        poppler_annot_markup_set_popup (markup, &poppler_rect);
#endif
			else
				poppler_annot_markup_set_popup (markup, &poppler_rect);
		}
		if (mask & EV_ANNOTATIONS_SAVE_POPUP_IS_OPEN)
			poppler_annot_markup_set_popup_is_open (markup, ev_annotation_markup_get_popup_is_open (ev_markup));
	}

	if (EV_IS_ANNOTATION_TEXT (annot)) {
		EvAnnotationText *ev_text = EV_ANNOTATION_TEXT (annot);
		PopplerAnnotText *text = POPPLER_ANNOT_TEXT (poppler_annot);

		if (mask & EV_ANNOTATIONS_SAVE_TEXT_IS_OPEN) {
			poppler_annot_text_set_is_open (text,
							ev_annotation_text_get_is_open (ev_text));
		}
		if (mask & EV_ANNOTATIONS_SAVE_TEXT_ICON) {
			EvAnnotationTextIcon icon;

			icon = ev_annotation_text_get_icon (ev_text);
			poppler_annot_text_set_icon (text, get_poppler_annot_text_icon (icon));
		}
	}

	if (EV_IS_ANNOTATION_TEXT_MARKUP (annot)) {
		EvAnnotationTextMarkup *ev_text_markup = EV_ANNOTATION_TEXT_MARKUP (annot);
		PopplerAnnotTextMarkup *text_markup = POPPLER_ANNOT_TEXT_MARKUP (poppler_annot);

		if (mask & EV_ANNOTATIONS_SAVE_TEXT_MARKUP_TYPE) {
			/* In poppler every text markup annotation type is a different class */
			GArray           *quads;
			PopplerRectangle  rect;
			PopplerAnnot     *new_annot = NULL;
			PdfDocument      *pdf_document;
			EvPage           *page;
			PopplerPage      *poppler_page;

			pdf_document = PDF_DOCUMENT (document_annotations);

			quads = poppler_annot_text_markup_get_quadrilaterals (text_markup);
			poppler_annot_get_rectangle (POPPLER_ANNOT (text_markup), &rect);

			switch (ev_annotation_text_markup_get_markup_type (ev_text_markup)) {
			case EV_ANNOTATION_TEXT_MARKUP_HIGHLIGHT:
				new_annot = poppler_annot_text_markup_new_highlight (pdf_document->document, &rect, quads);
				break;
			case EV_ANNOTATION_TEXT_MARKUP_STRIKE_OUT:
				new_annot = poppler_annot_text_markup_new_strikeout (pdf_document->document, &rect, quads);
				break;
			case EV_ANNOTATION_TEXT_MARKUP_UNDERLINE:
				new_annot = poppler_annot_text_markup_new_underline (pdf_document->document, &rect, quads);
				break;
			case EV_ANNOTATION_TEXT_MARKUP_SQUIGGLY:
				new_annot = poppler_annot_text_markup_new_squiggly (pdf_document->document, &rect, quads);
				break;
			}

			g_array_unref (quads);

			copy_poppler_annot (poppler_annot, new_annot);

			page = ev_annotation_get_page (annot);
			poppler_page = POPPLER_PAGE (page->backend_page);

			poppler_page_remove_annot (poppler_page, poppler_annot);
			poppler_page_add_annot (poppler_page, new_annot);
			g_object_set_data_full (G_OBJECT (annot),
						"poppler-annot",
						new_annot,
						(GDestroyNotify) g_object_unref);
		}

		if (mask & EV_ANNOTATIONS_SAVE_AREA) {
			EvRectangle       area;
			GArray           *quads;
			PopplerRectangle  bbox;
			EvPage           *page;
			PopplerPage      *poppler_page;

			page = ev_annotation_get_page (annot);
			poppler_page = POPPLER_PAGE (page->backend_page);

			ev_annotation_get_area (annot, &area);
			quads = get_quads_for_area (poppler_page, &area, &bbox);
			poppler_annot_text_markup_set_quadrilaterals (text_markup, quads);
			poppler_annot_set_rectangle (poppler_annot, &bbox);
			g_array_unref (quads);

			if (bbox.x1 != 0 && bbox.y1 != 0 && bbox.x2 != 0 && bbox.y2 != 0) {
				gdouble height;

				poppler_page_get_size (poppler_page, NULL, &height);
				area.x1 = bbox.x1;
				area.x2 = bbox.x2;
				area.y1 = height - bbox.y2;
				area.y2 = height - bbox.y1;
			} else {
				area.x1 = 0;
				area.x2 = 0;
				area.y1 = 0;
				area.y2 = 0;
			}
			ev_annotation_set_area (annot, &area);
		}
	}

	PDF_DOCUMENT (document_annotations)->annots_modified = TRUE;
}

static void
pdf_document_document_annotations_iface_init (EvDocumentAnnotationsInterface *iface)
{
	iface->get_annotations = pdf_document_annotations_get_annotations;
	iface->document_is_modified = pdf_document_annotations_document_is_modified;
	iface->add_annotation = pdf_document_annotations_add_annotation;
	iface->save_annotation = pdf_document_annotations_save_annotation;
	iface->remove_annotation = pdf_document_annotations_remove_annotation;
}

/* Attachments */
struct SaveToBufferData {
	gchar *buffer;
	gsize len, max;
};

static gboolean
attachment_save_to_buffer_callback (const gchar  *buf,
				    gsize         count,
				    gpointer      user_data,
				    GError      **error)
{
	struct SaveToBufferData *sdata = (SaveToBufferData *)user_data;
	gchar *new_buffer;
	gsize new_max;

	if (sdata->len + count > sdata->max) {
		new_max = MAX (sdata->max * 2, sdata->len + count);
		new_buffer = (gchar *)g_realloc (sdata->buffer, new_max);

		sdata->buffer = new_buffer;
		sdata->max = new_max;
	}

	memcpy (sdata->buffer + sdata->len, buf, count);
	sdata->len += count;

	return TRUE;
}

static gboolean
attachment_save_to_buffer (PopplerAttachment  *attachment,
			   gchar             **buffer,
			   gsize              *buffer_size,
			   GError            **error)
{
	static const gint initial_max = 1024;
	struct SaveToBufferData sdata;

	*buffer = NULL;
	*buffer_size = 0;

	sdata.buffer = (gchar *) g_malloc (initial_max);
	sdata.max = initial_max;
	sdata.len = 0;

	if (! poppler_attachment_save_to_callback (attachment,
						   attachment_save_to_buffer_callback,
						   &sdata,
						   error)) {
		g_free (sdata.buffer);
		return FALSE;
	}

	*buffer = sdata.buffer;
	*buffer_size = sdata.len;

	return TRUE;
}

static GList *
pdf_document_attachments_get_attachments (EvDocumentAttachments *document)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document);
	GList *attachments;
	GList *list;
	GList *retval = NULL;

	attachments = poppler_document_get_attachments (pdf_document->document);

	for (list = attachments; list; list = list->next) {
		PopplerAttachment *attachment;
		EvAttachment *ev_attachment;
		gchar *data = NULL;
		gsize size;
		GError *error = NULL;

		attachment = (PopplerAttachment *) list->data;

		if (attachment_save_to_buffer (attachment, &data, &size, &error)) {
			GDateTime *mtime = poppler_attachment_get_mtime (attachment);
			GDateTime *ctime = poppler_attachment_get_ctime (attachment);
			ev_attachment = ev_attachment_new (attachment->name,
							   attachment->description,
                               mtime,
                               ctime,
							   size, data);

			retval = g_list_prepend (retval, ev_attachment);
		} else {
			if (error) {
				g_warning ("%s", error->message);
				g_error_free (error);

				g_free (data);
			}
		}

		g_object_unref (attachment);
	}

	return g_list_reverse (retval);
}

static gboolean
pdf_document_attachments_has_attachments (EvDocumentAttachments *document)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document);

	return poppler_document_has_attachments (pdf_document->document);
}

static void
pdf_document_document_attachments_iface_init (EvDocumentAttachmentsInterface *iface)
{
	iface->has_attachments = pdf_document_attachments_has_attachments;
	iface->get_attachments = pdf_document_attachments_get_attachments;
}

/* Layers */
static gboolean
pdf_document_layers_has_layers (EvDocumentLayers *document)
{
	PdfDocument *pdf_document = PDF_DOCUMENT (document);
	PopplerLayersIter *iter;

	iter = poppler_layers_iter_new (pdf_document->document);
	if (!iter)
		return FALSE;
	poppler_layers_iter_free (iter);

	return TRUE;
}

static void
build_layers_tree (PdfDocument       *pdf_document,
		   GtkTreeModel      *model,
		   GtkTreeIter       *parent,
		   PopplerLayersIter *iter)
{
	do {
		GtkTreeIter        tree_iter;
		PopplerLayersIter *child;
		PopplerLayer      *layer;
		EvLayer           *ev_layer = NULL;
		gboolean           visible;
		gchar             *markup;
		gint               rb_group = 0;

		layer = poppler_layers_iter_get_layer (iter);
		if (layer) {
			markup = g_markup_escape_text (poppler_layer_get_title (layer), -1);
			visible = poppler_layer_is_visible (layer);
			rb_group = poppler_layer_get_radio_button_group_id (layer);
			ev_layer = ev_layer_new (poppler_layer_is_parent (layer),
						 rb_group);
			g_object_set_data_full (G_OBJECT (ev_layer),
						"poppler-layer",
						g_object_ref (layer),
						(GDestroyNotify) g_object_unref);
		} else {
			gchar *title;

			title = poppler_layers_iter_get_title (iter);
			markup = g_markup_escape_text (title, -1);
			g_free (title);

			visible = FALSE;
			layer = NULL;
		}

		gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
		gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
				    EV_DOCUMENT_LAYERS_COLUMN_TITLE, markup,
				    EV_DOCUMENT_LAYERS_COLUMN_VISIBLE, visible,
				    EV_DOCUMENT_LAYERS_COLUMN_ENABLED, TRUE, /* FIXME */
				    EV_DOCUMENT_LAYERS_COLUMN_SHOWTOGGLE, (layer != NULL),
				    EV_DOCUMENT_LAYERS_COLUMN_RBGROUP, rb_group,
				    EV_DOCUMENT_LAYERS_COLUMN_LAYER, ev_layer,
				    -1);
		if (ev_layer)
			g_object_unref (ev_layer);
		g_free (markup);

		child = poppler_layers_iter_get_child (iter);
		if (child)
			build_layers_tree (pdf_document, model, &tree_iter, child);
		poppler_layers_iter_free (child);
	} while (poppler_layers_iter_next (iter));
}

static GtkTreeModel *
pdf_document_layers_get_layers (EvDocumentLayers *document)
{
	GtkTreeModel *model = NULL;
	PdfDocument *pdf_document = PDF_DOCUMENT (document);
	PopplerLayersIter *iter;

	iter = poppler_layers_iter_new (pdf_document->document);
	if (iter) {
		model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LAYERS_N_COLUMNS,
							     G_TYPE_STRING,  /* TITLE */
							     G_TYPE_OBJECT,  /* LAYER */
							     G_TYPE_BOOLEAN, /* VISIBLE */
							     G_TYPE_BOOLEAN, /* ENABLED */
							     G_TYPE_BOOLEAN, /* SHOWTOGGLE */
							     G_TYPE_INT);    /* RBGROUP */
		build_layers_tree (pdf_document, model, NULL, iter);
		poppler_layers_iter_free (iter);
	}
	return model;
}

static void
pdf_document_layers_show_layer (EvDocumentLayers *document,
				EvLayer          *layer)
{
	PopplerLayer *poppler_layer;

	poppler_layer = POPPLER_LAYER (g_object_get_data (G_OBJECT (layer), "poppler-layer"));
	poppler_layer_show (poppler_layer);
}

static void
pdf_document_layers_hide_layer (EvDocumentLayers *document,
				EvLayer          *layer)
{
	PopplerLayer *poppler_layer;

	poppler_layer = POPPLER_LAYER (g_object_get_data (G_OBJECT (layer), "poppler-layer"));
	poppler_layer_hide (poppler_layer);
}

static gboolean
pdf_document_layers_layer_is_visible (EvDocumentLayers *document,
				      EvLayer          *layer)
{
	PopplerLayer *poppler_layer;

	poppler_layer = POPPLER_LAYER (g_object_get_data (G_OBJECT (layer), "poppler-layer"));
	return poppler_layer_is_visible (poppler_layer);
}

static void
pdf_document_document_layers_iface_init (EvDocumentLayersInterface *iface)
{
	iface->has_layers = pdf_document_layers_has_layers;
	iface->get_layers = pdf_document_layers_get_layers;
	iface->show_layer = pdf_document_layers_show_layer;
	iface->hide_layer = pdf_document_layers_hide_layer;
	iface->layer_is_visible = pdf_document_layers_layer_is_visible;
}
